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Description

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.

PUBLISHED Reserved 2025-10-08 | Published 2025-11-11 | Updated 2026-01-02 | Assigner microsoft




HIGH: 7.0CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Problem types

CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Product status

10.0.17763.0 (custom) before 10.0.17763.8027
affected

10.0.17763.0 (custom) before 10.0.17763.8027
affected

10.0.17763.0 (custom) before 10.0.17763.8027
affected

10.0.20348.0 (custom) before 10.0.20348.4405
affected

10.0.19044.0 (custom) before 10.0.19044.6575
affected

10.0.19045.0 (custom) before 10.0.19045.6575
affected

10.0.26100.0 (custom) before 10.0.26100.7171
affected

10.0.26200.0 (custom) before 10.0.26200.7171
affected

10.0.22631.0 (custom) before 10.0.22631.6199
affected

10.0.22631.0 (custom) before 10.0.22631.6199
affected

10.0.25398.0 (custom) before 10.0.25398.1965
affected

10.0.26100.0 (custom) before 10.0.26100.7171
affected

10.0.26100.0 (custom) before 10.0.26100.7171
affected

10.0.14393.0 (custom) before 10.0.14393.8594
affected

10.0.14393.0 (custom) before 10.0.14393.8594
affected

10.0.14393.0 (custom) before 10.0.14393.8594
affected

6.0.6003.0 (custom) before 6.0.6003.23624
affected

6.0.6003.0 (custom) before 6.0.6003.23624
affected

6.1.7601.0 (custom) before 6.1.7601.28021
affected

6.1.7601.0 (custom) before 6.1.7601.28021
affected

6.2.9200.0 (custom) before 6.2.9200.25768
affected

6.2.9200.0 (custom) before 6.2.9200.25768
affected

6.3.9600.0 (custom) before 6.3.9600.22869
affected

6.3.9600.0 (custom) before 6.3.9600.22869
affected

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-62217 (Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability) vendor-advisory

cve.org (CVE-2025-62217)

nvd.nist.gov (CVE-2025-62217)

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