Updated 10 h ago

Vulnerability database

Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.

1,766exploited flaws on CISA’s list

36added in the last 30 days

526new WordPress flaws this week

391,181entries in the database

9,532 results · page 12 of 191

Oct 14, 2026A flaw was found in the clevis PKCS#11 pin.CVE-2026-109971 · Other software · Red Hat · reported by Red HatMedium 4.7
A flaw was found in the clevis PKCS#11 pin. The clevis-decrypt-pkcs11 script passes the PKCS#11 token PIN as a command-line argument to pkcs11-tool, making it visible to any local user through process listing or the /proc filesystem.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com bugzilla.redhat.com
Oct 14, 2026A flaw was found in the clevis PKCS#11 pin.CVE-2026-109970 · Other software · Red Hat · reported by Red HatMedium 4.7
A flaw was found in the clevis PKCS#11 pin. The clevis-luks-pkcs11-askpin script writes the PKCS#11 token PIN in plaintext to a file without setting restrictive permissions. Under the default process umask, the file is world-readable. Additionally, the PIN file is not reliably cleaned up if the decryption script exits early, leaving the PIN accessible indefinitely.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com bugzilla.redhat.com
Oct 14, 2026A flaw was found in the clevis PKCS#11 pin.CVE-2026-109969 · Other software · Red Hat · reported by Red HatMedium 4.7
A flaw was found in the clevis PKCS#11 pin. The clevis-pkcs11-afunix-socket-unlock daemon creates AF_UNIX sockets without explicit permission restrictions or peer credential verification. Under a permissive process umask, any local user can connect to the control socket and inject arbitrary device/key pairs, or connect to the data socket to receive LUKS passphrases.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com bugzilla.redhat.com
Oct 14, 2026A flaw was found in the GStreamer multimedia framework's ASF muxer plugin (asfmux).CVE-2026-100231 · Other software · Red Hat · reported by Red HatMedium 6.1
A flaw was found in the GStreamer multimedia framework's ASF muxer plugin (asfmux). When writing string metadata tags containing Unicode characters outside the Basic Multilingual Plane (such as emoji) to an ASF container, the plugin incorrectly calculates the buffer size needed for the UTF-16LE representation. The size calculation assumes each Unicode code point requires 2 bytes, but non-BMP characters require 4 bytes (surrogate pairs). This leads to a heap out-of-bounds write when the actual UTF-16LE conversion is written into the undersized buffer. An attacker could exploit this by providing media with crafted metadata tags to an application that transcodes or remuxes to ASF format while preserving metadata, potentially causing a denial of service or limited memory corruption.
Product
Red Hat Enterprise Linux 10
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record access.redhat.com bugzilla.redhat.com
Oct 14, 2026A vulnerability in HPE NonStop iTP WebServer can cause memory corruption and system shutdown.CVE-2026-73790 · Other software · Hewlett Packard Enterprise · reported by security-alert@hpe.comHigh 8.2
A vulnerability in HPE NonStop iTP WebServer can cause memory corruption and system shutdown.
Product
HPE NonStop iTP WebServer
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record support.hpe.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.CVE-2026-102855 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Visio allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform sCVE-2026-97783 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.1
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an unauthorized attacker to perform spoofing over a network.
Product
Microsoft SharePoint Enterprise Server 2016
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code CVE-2026-97781 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Improper neutralization of special elements used in a command ('command injection') in Microsoft Office OneNote allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97780 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.CVE-2026-97779 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97778 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Integer overflow or wraparound in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97777 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97776 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97775 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Time-of-check time-of-use (toctou) race condition in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.CVE-2026-97774 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Time-of-check time-of-use (toctou) race condition in Microsoft Office Click-To-Run allows an authorized attacker to elevate privileges locally.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97773 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97772 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97771 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97770 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97769 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97768 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97767 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Double free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97766 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97765 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97763 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97762 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Out-of-bounds write in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97761 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.CVE-2026-97760 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97759 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97758 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97757 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97756 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97755 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97754 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97753 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97752 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97751 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97750 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Double free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.CVE-2026-97749 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Double free in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97748 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97747 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97746 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97745 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.CVE-2026-97744 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Out-of-bounds read in Microsoft Office PowerPoint allows an unauthorized attacker to disclose information locally.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.CVE-2026-97743 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Use after free in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97742 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97741 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information oveCVE-2026-97740 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Exposure of sensitive system information to an unauthorized control sphere in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97739 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Integer underflow (wrap or wraparound) in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com
Oct 13, 2026Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.CVE-2026-97738 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Product
Microsoft 365 Apps for Enterprise
What to do
Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD record msrc.microsoft.com

Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.

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