2026 CVE Vulnerabilities

56,236 CVEs published in 2026.

Filter:HIGHClear
CVE IDSeverityCVSSDescription
CVE-2026-21253HIGH7Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
CVE-2026-21251HIGH7.8Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally.
CVE-2026-21250HIGH7.8Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21248HIGH7.3Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21247HIGH7.3Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21246HIGH7.8Heap-based buffer overflow in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-21245HIGH7.8Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21244HIGH7.3Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21243HIGH7.5Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny...
CVE-2026-21242HIGH7Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
CVE-2026-21241HIGH7Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges loca...
CVE-2026-21240HIGH7Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privilege...
CVE-2026-21239HIGH7.8Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21238HIGH7.8Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privil...
CVE-2026-21237HIGH7Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Subsystem for Lin...
CVE-2026-21236HIGH7.8Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate pri...
CVE-2026-21235HIGH7.3Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
CVE-2026-21234HIGH7Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices...
CVE-2026-21232HIGH7.8Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21231HIGH7.8Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an ...
CVE-2026-21229HIGH8.8Improper input validation in Power BI allows an authorized attacker to execute code over a network.
CVE-2026-21228HIGH8.1Improper certificate validation in Azure Local allows an unauthorized attacker to execute code over a network.
CVE-2026-21218HIGH7.5Improper handling of missing special element in .NET allows an unauthorized attacker to perform spoofing over a network.
CVE-2026-20846HIGH7.5Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.
CVE-2026-20841HIGH7.8Improper neutralization of special elements used in a command ('command injection') in Windows Notepad App allows an una...

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