Search Results (7043 CVEs found)

CVE Vendors Products Updated CVSS v3.1
CVE-2026-2636 1 Microsoft 5 Windows, Windows 11, Windows 11 23h2 and 2 more 2026-02-27 5.5 Medium
This vulnerability is caused by a CWE‑159: "Improper Handling of Invalid Use of Special Elements" weakness, which leads to an unrecoverable inconsistency in the CLFS.sys driver. This condition forces a call to the KeBugCheckEx function, allowing an unprivileged user to trigger a system crash. Microsoft silently fixed this vulnerability in the September 2025 cumulative update for Windows 11 2024 LTSC and Windows Server 2025. Windows 25H2 (released in September) was released with the patch. Windows 1123h2 and earlier versions remain vulnerable.
CVE-2026-20846 1 Microsoft 30 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 27 more 2026-02-26 7.5 High
Buffer over-read in Windows GDI+ allows an unauthorized attacker to deny service over a network.
CVE-2026-21222 1 Microsoft 25 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 22 more 2026-02-26 5.5 Medium
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.
CVE-2026-21231 1 Microsoft 30 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 27 more 2026-02-26 7.8 High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21232 1 Microsoft 14 Windows 11 22h3, Windows 11 23h2, Windows 11 23h2 and 11 more 2026-02-26 7.8 High
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21237 1 Microsoft 19 Windows 10 21h2, Windows 10 21h2, Windows 10 22h2 and 16 more 2026-02-26 7 High
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
CVE-2026-21238 1 Microsoft 30 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 27 more 2026-02-26 7.8 High
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-21239 1 Microsoft 28 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 25 more 2026-02-26 7.8 High
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21241 1 Microsoft 15 Windows 11 22h3, Windows 11 23h2, Windows 11 23h2 and 12 more 2026-02-26 7 High
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
CVE-2026-21240 1 Microsoft 22 Windows 10 1809, Windows 10 21h2, Windows 10 21h2 and 19 more 2026-02-26 7.8 High
Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21243 1 Microsoft 8 Windows Server 2019, Windows Server 2019 (server Core Installation), Windows Server 2022 and 5 more 2026-02-26 7.5 High
Null pointer dereference in Windows LDAP - Lightweight Directory Access Protocol allows an unauthorized attacker to deny service over a network.
CVE-2026-21244 1 Microsoft 25 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 22 more 2026-02-26 7.3 High
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally.
CVE-2026-21245 1 Microsoft 8 Windows 11 24h2, Windows 11 24h2, Windows 11 25h2 and 5 more 2026-02-26 7.8 High
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
CVE-2026-21249 1 Microsoft 29 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 26 more 2026-02-26 3.3 Low
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
CVE-2026-21250 1 Microsoft 11 Windows 11 24h2, Windows 11 24h2, Windows 11 25h2 and 8 more 2026-02-26 7.8 High
Untrusted pointer dereference in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
CVE-2026-21251 1 Microsoft 10 Windows Server 2016, Windows Server 2016 (server Core Installation), Windows Server 2019 and 7 more 2026-02-26 7.8 High
Use after free in Windows Cluster Client Failover allows an authorized attacker to elevate privileges locally.
CVE-2026-21253 1 Microsoft 30 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 27 more 2026-02-26 7 High
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
CVE-2026-21255 1 Microsoft 25 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 22 more 2026-02-26 8.8 High
Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.
CVE-2026-21508 1 Microsoft 30 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 27 more 2026-02-26 7 High
Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.
CVE-2026-21525 1 Microsoft 30 Windows 10 1607, Windows 10 1809, Windows 10 21h2 and 27 more 2026-02-26 6.2 Medium
Null pointer dereference in Windows Remote Access Connection Manager allows an unauthorized attacker to deny service locally.