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.
6,370 results · page 8 of 128
Oct 13, 2026Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information over a network.CVE-2026-85331 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Windows Device Association Service allows an authorized attacker to disclose information over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Account allows an authorized attacker to elevate privilCVE-2026-85329 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Account allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Weak authentication in Windows Projected File System allows an authorized attacker to elevate privileges locally.CVE-2026-85328 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Weak authentication in Windows Projected File System allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.CVE-2026-85327 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Memory allocation with excessive size value in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.CVE-2026-85324 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Memory allocation with excessive size value in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Weak authentication in Network Device Enrollment Service (NDES) allows an authorized attacker to perform spoofing over a network.CVE-2026-85323 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.8
Weak authentication in Network Device Enrollment Service (NDES) allows an authorized attacker to perform spoofing over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.CVE-2026-85322 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Use of uninitialized resource in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use of uninitialized resource in Windows Print Spooler Components allows an authorized attacker to disclose information locally.CVE-2026-85320 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Use of uninitialized resource in Windows Print Spooler Components allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a netwCVE-2026-85319 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.CVE-2026-85318 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.CVE-2026-84020 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Routing and Remote Access Service (RRAS) allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Advanced Rasterization Platform allows an authorized attacker to elevate privileges locally.CVE-2026-84019 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Advanced Rasterization Platform allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.CVE-2026-84018 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Print Spooler Components allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.CVE-2026-84017 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Null pointer dereference in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds write in Windows EAPHost Service allows an authorized attacker to elevate privileges locally.CVE-2026-84016 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Out-of-bounds write in Windows EAPHost Service allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Remote Access Point-to-Point Protocol (PPP) EAP-TLS allows an unauthorized attacker to execute code over a network.CVE-2026-84015 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Heap-based buffer overflow in Remote Access Point-to-Point Protocol (PPP) EAP-TLS allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges locally.CVE-2026-84014 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Heap-based buffer overflow in Windows Device Association Service allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Telephony Server allows an authorized attacker to elevate privileges locally.CVE-2026-84013 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows Telephony Server allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Double free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.CVE-2026-84012 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Double free in Remote Desktop Gateway Service allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Time-of-check time-of-use (toctou) race condition in Windows Projected File System allows an authorized attacker to perform tampering locally.CVE-2026-84009 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.7
Time-of-check time-of-use (toctou) race condition in Windows Projected File System allows an authorized attacker to perform tampering locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft XML allows an unauthorized attacker to execute code over a network.CVE-2026-83935 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Heap-based buffer overflow in Microsoft XML allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Stack-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.CVE-2026-83934 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Stack-based buffer overflow in Windows GDI+ allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to disclose information locaCVE-2026-83933 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Improper link resolution before file access ('link following') in Windows Update Orchestrator Service allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Group Policy allows an authorized attacker to elevate privileges locally.CVE-2026-83932 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Group Policy allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.CVE-2026-83929 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Out-of-bounds write in Windows GDI allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.CVE-2026-83928 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Out-of-bounds write in Windows Local Security Authority Subsystem Service (LSASS) allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges locally.CVE-2026-83927 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Improper link resolution before file access ('link following') in Windows Registry allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.CVE-2026-83926 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.4
Improper certificate validation in Windows Hello allows an authorized attacker to bypass a security feature locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use of uninitialized resource in Windows Kernel allows an authorized attacker to disclose information locally.CVE-2026-83925 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.7
Use of uninitialized resource in Windows Kernel allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.CVE-2026-83924 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Relative path traversal in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.CVE-2026-83923 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Relative path traversal in OpenSSH for Windows allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.CVE-2026-83922 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.CVE-2026-83921 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.CVE-2026-83920 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Internet Messaging API allows an authorized attacker to execute code locally.CVE-2026-83919 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Microsoft Internet Messaging API allows an authorized attacker to execute code locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally.CVE-2026-83918 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Integer overflow or wraparound in Windows Kernel allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows ALPC allows an authorized attacker to elevate privileges locally.CVE-2026-83917 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows ALPC allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Double free in Windows Error Reporting allows an authorized attacker to execute code locally.CVE-2026-83916 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Double free in Windows Error Reporting allows an authorized attacker to execute code locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Diagnostic Policy Service allows an authorized attacker to elevate privileges locally.CVE-2026-83915 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Diagnostic Policy Service allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Microsoft XML allows an unauthorized attacker to execute code over a network.CVE-2026-83914 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in Microsoft XML allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.CVE-2026-83913 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.CVE-2026-83912 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.CVE-2026-83911 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Heap-based buffer overflow in Windows Storage allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds write in RPC Runtime allows an unauthorized attacker to execute code over a network.CVE-2026-83910 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Out-of-bounds write in RPC Runtime allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose informatiCVE-2026-83909 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.7
Exposure of sensitive system information to an unauthorized control sphere in Windows Win32 Kernel Subsystem allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate privileges locally.CVE-2026-83908 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Release of invalid pointer or reference in RPC Runtime allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Exposure of sensitive system information to an unauthorized control sphere in Windows Hello allows an authorized attacker to disclose information locally.CVE-2026-83907 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Exposure of sensitive system information to an unauthorized control sphere in Windows Hello allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Exposure of sensitive system information to an unauthorized control sphere in Windows Shell allows an authorized attacker to disclose information locally.CVE-2026-83905 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.7
Exposure of sensitive system information to an unauthorized control sphere in Windows Shell allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.CVE-2026-83904 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Out-of-bounds read in HID Parser Library allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.CVE-2026-83902 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Direct Composition allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
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.
Weekly security brief
The flaws that hit local websites, every Friday.
One short email: what got exploited this week, which WordPress plugins broke, and what to check. Unsubscribe in one click.
Tell us what you're building.
A website, your marketing, a security check, an app, or the thing you've been running out of a spreadsheet for three years. A few lines is plenty.
Not ready to talk yet? Run the free website check and see what Google sees.