Windows 11 26h1
by Microsoft
CVEs (334)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2026-21237 | 0.00 | — | 0.00 | Feb 10, 2026 | 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 | 0.00 | — | 0.03 | Feb 10, 2026 | Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21241 | 0.00 | — | 0.02 | Feb 10, 2026 | Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21240 | 0.00 | — | 0.00 | Feb 10, 2026 | Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21245 | 0.00 | — | 0.00 | Feb 10, 2026 | Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21249 | 0.00 | — | 0.11 | Feb 10, 2026 | External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally. | |||
| CVE-2026-21253 | 0.00 | — | 0.01 | Feb 10, 2026 | Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21255 | 0.00 | — | 0.00 | Feb 10, 2026 | Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally. | |||
| CVE-2026-21508 | 0.00 | — | 0.00 | Feb 10, 2026 | Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21236 | 0.00 | — | 0.00 | Feb 10, 2026 | Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21234 | 0.00 | — | 0.00 | Feb 10, 2026 | Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21235 | 0.00 | — | 0.01 | Feb 10, 2026 | Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21242 | 0.00 | — | 0.00 | Feb 10, 2026 | Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally. | |||
| CVE-2026-21247 | 0.00 | — | 0.01 | Feb 10, 2026 | Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally. |
- CVE-2026-21237Feb 10, 2026risk 0.00cvss —epss 0.00
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
- CVE-2026-21238Feb 10, 2026risk 0.00cvss —epss 0.03
Improper access control in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-21241Feb 10, 2026risk 0.00cvss —epss 0.02
Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-21240Feb 10, 2026risk 0.00cvss —epss 0.00
Time-of-check time-of-use (toctou) race condition in Windows HTTP.sys allows an authorized attacker to elevate privileges locally.
- CVE-2026-21245Feb 10, 2026risk 0.00cvss —epss 0.00
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
- CVE-2026-21249Feb 10, 2026risk 0.00cvss —epss 0.11
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing locally.
- CVE-2026-21253Feb 10, 2026risk 0.00cvss —epss 0.01
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
- CVE-2026-21255Feb 10, 2026risk 0.00cvss —epss 0.00
Improper access control in Windows Hyper-V allows an authorized attacker to bypass a security feature locally.
- CVE-2026-21508Feb 10, 2026risk 0.00cvss —epss 0.00
Improper authentication in Windows Storage allows an authorized attacker to elevate privileges locally.
- CVE-2026-21236Feb 10, 2026risk 0.00cvss —epss 0.00
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
- CVE-2026-21234Feb 10, 2026risk 0.00cvss —epss 0.00
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Connected Devices Platform Service allows an authorized attacker to elevate privileges locally.
- CVE-2026-21235Feb 10, 2026risk 0.00cvss —epss 0.01
Use after free in Microsoft Graphics Component allows an authorized attacker to elevate privileges locally.
- CVE-2026-21242Feb 10, 2026risk 0.00cvss —epss 0.00
Use after free in Windows Subsystem for Linux allows an authorized attacker to elevate privileges locally.
- CVE-2026-21247Feb 10, 2026risk 0.00cvss —epss 0.01
Improper input validation in Windows Hyper-V allows an authorized attacker to execute code locally.
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