CVE catalog
CVE-2026-26173
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally
- Severity
- High · CVSS 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.16% · Oct 25, 2026
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | windows_10_1607 | Not reported | 10.0.14393.9060 | fixed |
| Cpe | windows_10_1809 | Not reported | 10.0.17763.8644 | fixed |
| Cpe | windows_10_21h2 | Not reported | 10.0.19044.7184 | fixed |
| Cpe | windows_10_22h2 | Not reported | 10.0.19045.7184 | fixed |
| Cpe | windows_11_23h2 | Not reported | 10.0.22631.6936 | fixed |
| Cpe | windows_11_24h2 | Not reported | 10.0.26100.8246 | fixed |
| Cpe | windows_11_25h2 | Not reported | 10.0.26200.8246 | fixed |
| Cpe | windows_11_26h1 | Not reported | 10.0.28000.1836 | fixed |
| Cpe | windows_server_2012 | Not reported | Not reported | unknown |
| Cpe | windows_10_1607 | Not reported | 10.0.14393.9060 | fixed |
| Cpe | windows_10_1809 | Not reported | 10.0.17763.8644 | fixed |
| Cpe | windows_10_21h2 | Not reported | 10.0.19044.7184 | fixed |
| Cpe | windows_10_22h2 | Not reported | 10.0.19045.7184 | fixed |
| Cpe | windows_11_23h2 | Not reported | 10.0.22631.6936 | fixed |
| Cpe | windows_11_24h2 | Not reported | 10.0.26100.8246 | fixed |
| Cpe | windows_11_25h2 | Not reported | 10.0.26200.8246 | fixed |
| Cpe | windows_11_26h1 | Not reported | 10.0.28000.1836 | fixed |
| Cpe | windows_server_2012 | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | windows_10_1607 | cpe | Not reported | 10.0.14393.9060 | Not reported | Not reported | Not reported |
| Cpe | windows_10_1809 | cpe | Not reported | 10.0.17763.8644 | Not reported | Not reported | Not reported |
| Cpe | windows_10_21h2 | cpe | Not reported | 10.0.19044.7184 | Not reported | Not reported | Not reported |
| Cpe | windows_10_22h2 | cpe | Not reported | 10.0.19045.7184 | Not reported | Not reported | Not reported |
| Cpe | windows_11_23h2 | cpe | Not reported | 10.0.22631.6936 | Not reported | Not reported | Not reported |
| Cpe | windows_11_24h2 | cpe | Not reported | 10.0.26100.8246 | Not reported | Not reported | Not reported |
| Cpe | windows_11_25h2 | cpe | Not reported | 10.0.26200.8246 | Not reported | Not reported | Not reported |
| Cpe | windows_11_26h1 | cpe | Not reported | 10.0.28000.1836 | Not reported | Not reported | Not reported |
| Cpe | windows_10_1607 | cpe | Not reported | 10.0.14393.9060 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_10_1809 | cpe | Not reported | 10.0.17763.8644 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_10_21h2 | cpe | Not reported | 10.0.19044.7184 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_10_22h2 | cpe | Not reported | 10.0.19045.7184 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_11_23h2 | cpe | Not reported | 10.0.22631.6936 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_11_24h2 | cpe | Not reported | 10.0.26100.8246 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_11_25h2 | cpe | Not reported | 10.0.26200.8246 | Not reported | NVD-CVE-2026-26173 | Not reported |
| Cpe | windows_11_26h1 | cpe | Not reported | 10.0.28000.1836 | Not reported | NVD-CVE-2026-26173 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: