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Description
Heap-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
PUBLISHED Reserved 2025-09-11 | Published 2025-10-14 | Updated 2025-10-15 | Assigner microsoft
HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Problem types
CWE-122: Heap-based Buffer Overflow
CWE-191: Integer Underflow (Wrap or Wraparound)
Product status
10.0.17763.0 before 10.0.17763.7919
affected
10.0.17763.0 before 10.0.17763.7919
affected
10.0.17763.0 before 10.0.17763.7919
affected
10.0.20348.0 before 10.0.20348.4294
affected
10.0.19044.0 before 10.0.19044.6456
affected
10.0.22621.0 before 10.0.22621.6060
affected
10.0.19045.0 before 10.0.19045.6456
affected
10.0.26100.0 before 10.0.26100.6899
affected
10.0.26200.0 before 10.0.26200.6899
affected
10.0.22631.0 before 10.0.22631.6060
affected
10.0.22631.0 before 10.0.22631.6060
affected
10.0.25398.0 before 10.0.25398.1913
affected
10.0.26100.0 before 10.0.26100.6899
affected
10.0.26100.0 before 10.0.26100.6899
affected
10.0.10240.0 before 10.0.10240.21161
affected
10.0.14393.0 before 10.0.14393.8519
affected
10.0.14393.0 before 10.0.14393.8519
affected
10.0.14393.0 before 10.0.14393.8519
affected
6.0.6003.0 before 6.0.6003.23571
affected
6.0.6003.0 before 6.0.6003.23571
affected
6.1.7601.0 before 6.1.7601.27974
affected
6.1.7601.0 before 6.1.7601.27974
affected
6.2.9200.0 before 6.2.9200.25722
affected
6.2.9200.0 before 6.2.9200.25722
affected
6.3.9600.0 before 6.3.9600.22824
affected
6.3.9600.0 before 6.3.9600.22824
affected
References
msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59242 (Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability) vendor-advisory
cve.org
(CVE-2025-59242)
nvd.nist.gov
(CVE-2025-59242)
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