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.
29,208 results · page 19 of 585
Oct 13, 2026Heap-based buffer overflow in Windows Storage Spaces Controller allows an unauthorized attacker to deny service over a network.CVE-2026-87716 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Heap-based buffer overflow in Windows Storage Spaces Controller allows an unauthorized attacker to deny service 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, 2026Missing authorization in WebDAV allows an authorized attacker to bypass a security feature over a network.CVE-2026-87714 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Missing authorization in WebDAV allows an authorized attacker to bypass a security feature 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 Bluetooth Port Driver allows an unauthorized attacker to elevate privileges over an adjacent network.CVE-2026-87713 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Use after free in Windows Bluetooth Port Driver allows an unauthorized attacker to elevate privileges over an adjacent network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to bypass a security feature over an adjacent netwCVE-2026-87705 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.4
Improper verification of source of a communication channel in Windows Hyper-V allows an unauthorized attacker to bypass a security feature over an adjacent network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.CVE-2026-87697 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in .NET allows an unauthorized attacker to execute code over a network.
- Product
- .NET 10.0 runtime
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.CVE-2026-87696 · Email & office · Microsoft · reported by secure@microsoft.comHigh 7.5
Improper verification of cryptographic signature in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
- Product
- Microsoft Exchange Server 2016 Cumulative Update 23
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Weak authentication in Windows Kernel allows an authorized attacker to bypass a security feature over a network.CVE-2026-85939 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.3
Weak authentication in Windows Kernel allows an authorized attacker to bypass a security feature 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, 2026Double free in Windows Shell allows an unauthorized attacker to execute code over a network.CVE-2026-85936 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Double free in Windows Shell 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 Distributed File System (DFS) allows an authorized attacker to execute code over a network.CVE-2026-85931 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized 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 Volume Manager Extension Driver allows an unauthorized attacker to execute code over a network.CVE-2026-85928 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Heap-based buffer overflow in Windows Volume Manager Extension Driver 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 Secure Socket Tunneling Protocol (SSTP) allows an unauthorized attacker to execute code over a network.CVE-2026-85926 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in Windows Secure Socket Tunneling Protocol (SSTP) 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 restriction of communication channel to intended endpoints in Azure Key Vault allows an authorized attacker to elevate privileges over a network.CVE-2026-85925 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.2
Improper restriction of communication channel to intended endpoints in Azure Key Vault allows an authorized attacker to elevate privileges over a network.
- Product
- azure-keyvault-administration
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Weak authentication in Azure Key Vault allows an unauthorized attacker to bypass a security feature over a network.CVE-2026-85922 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.4
Weak authentication in Azure Key Vault allows an unauthorized attacker to bypass a security feature over a network.
- Product
- azure_security_keyvault_certificates
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Untrusted pointer dereference in DNS Server allows an unauthorized attacker to execute code over a network.CVE-2026-85903 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Untrusted pointer dereference in DNS Server 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, 2026Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.CVE-2026-85900 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8.8
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- Product
- Microsoft SharePoint Server Subscription Edition
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Exposure of sensitive information to an unauthorized actor in Azure HDInsight allows an unauthorized attacker to disclose information over a network.CVE-2026-85891 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Exposure of sensitive information to an unauthorized actor in Azure HDInsight allows an unauthorized attacker to disclose information over a network.
- Product
- Azure HDInsight
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges over a network.CVE-2026-85881 · Email & office · Microsoft · reported by secure@microsoft.comHigh 8
Stack-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges over a network.
- Product
- Microsoft Office for Android
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.CVE-2026-85873 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Improper authorization in Skype for Business and Microsoft Lync allows an authorized attacker to elevate privileges over a network.
- Product
- Skype for Business Server 2015 CU13
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Null pointer dereference in Windows Message Queuing Queue Manager allows an authorized attacker to deny service over a network.CVE-2026-85859 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Null pointer dereference in Windows Message Queuing Queue Manager allows an authorized 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 Windows Internet Connection Sharing (ICS) allows an authorized attacker to execute code over an adjacent network.CVE-2026-85856 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.1
Heap-based buffer overflow in Windows Internet Connection Sharing (ICS) allows an authorized attacker to execute code over an adjacent 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 read in Windows Print Spooler Components allows an unauthorized attacker to disclose information over a network.CVE-2026-85847 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Windows Print Spooler Components 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 after free in Windows DHCP Server allows an authorized attacker to execute code over a network.CVE-2026-85841 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.6
Use after free in Windows DHCP Server allows an authorized 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, 2026Files or directories accessible to external parties in Windows Event Viewer allows an authorized attacker to disclose information over a network.CVE-2026-85840 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Files or directories accessible to external parties in Windows Event Viewer 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, 2026Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.CVE-2026-85818 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9
Improper verification of cryptographic signature in Windows Schannel allows an unauthorized attacker to perform spoofing over a network.
- Product
- Windows 11 version 23H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Reliance on untrusted inputs in a security decision in Windows PowerShell allows an unauthorized attacker to execute code over a network.CVE-2026-85817 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Reliance on untrusted inputs in a security decision in Windows PowerShell 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 read in Windows Wi-Fi Driver allows an authorized attacker to disclose information over an adjacent network.CVE-2026-85816 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.7
Out-of-bounds read in Windows Wi-Fi Driver allows an authorized attacker to disclose information over an adjacent 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 Microsoft Windows Media Foundation allows an unauthorized attacker to execute code over a network.CVE-2026-85814 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Heap-based buffer overflow in Microsoft Windows Media Foundation 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 Network Policy Server (NPS) allows an unauthorized attacker to execute code over an adjacent network.CVE-2026-85811 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over an adjacent 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 read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to deny service over a network.CVE-2026-85808 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Out-of-bounds read 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, 2026Integer underflow (wrap or wraparound) in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.CVE-2026-85806 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Integer underflow (wrap or wraparound) in Network Policy Server (NPS) 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, 2026Improperly implemented security check for standard in Windows PowerShell allows an unauthorized attacker to bypass a security feature over a network.CVE-2026-85805 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Improperly implemented security check for standard in Windows PowerShell allows an unauthorized attacker to bypass a security feature 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 Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.CVE-2026-85799 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in Network Policy Server (NPS) 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 Distributed File System (DFS) allows an authorized attacker to execute code over a network.CVE-2026-85798 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.2
Heap-based buffer overflow in Windows Distributed File System (DFS) allows an authorized 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 read in Windows GDI allows an unauthorized attacker to disclose information over a network.CVE-2026-85797 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Windows GDI 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 after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.CVE-2026-85790 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.9
Use after free in Microsoft QUIC allows an unauthorized attacker to disclose information over a network.
- Product
- Microsoft Visual Studio 2022 version 17.14
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Network Policy Server (NPS) allows an unauthorized attacker to execute code over a network.CVE-2026-85371 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Use after free in Network Policy Server (NPS) 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, 2026Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to elevate privileges over a network.CVE-2026-85363 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Integer overflow or wraparound in .NET Framework allows an unauthorized attacker to elevate privileges over a network.
- Product
- .NET 10.0 runtime
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Print Spooler Components allows an unauthorized attacker to disclose information over a network.CVE-2026-85353 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Out-of-bounds read in Windows Print Spooler Components 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, 2026Out-of-bounds read in Remote Desktop Client allows an unauthorized attacker to disclose information over a network.CVE-2026-85337 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 6.5
Out-of-bounds read in Remote Desktop Client 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, 2026Out-of-bounds read in Windows Message Queuing Queue Manager allows an unauthorized attacker to disclose information over a network.CVE-2026-85334 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Out-of-bounds read in Windows Message Queuing Queue Manager 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, 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, 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, 2026Allocation of resources without limits or throttling in Active Directory Federation Services (AD FS) allows an unauthorized attacker to deny service over a netwCVE-2026-85321 · 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 Server 2012 R2
- 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, 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, 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, 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, 2026Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.CVE-2026-84008 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Inefficient algorithmic complexity in .NET allows an unauthorized attacker to deny service over a network.
- Product
- Microsoft .NET Framework 3.5
- 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.
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