CVE-2025-53147

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

At a glance

Severity: HIGH 7.0
EPSS: EPSS 0.45 % · percentile 39 (2026-10-27)
State: PUBLISHED
Published: 2025-08-12
Updated: 2026-02-13
Assigner: microsoft
NVD status: Analyzed

Description

Use after free in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.

Scores

Version	Score	Vector	Scored by
CVSS 3.1	HIGH 7.0	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C	microsoft
CVSS 3.1	HIGH 7.0	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H	NVD · secure@microsoft.com (Secondary)

Weaknesses (CWE)

CWE-416

European references

ENISA EUVD · EUVD-2025-24321
GCVE · GCVE-0-2025-53147

CERT-FR advisories

CERTFR-2025-AVI-0687 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr

Affected configurations (NVD CPE)

cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* < 10.0.10240.21100
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* < 10.0.10240.21100
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:* < 10.0.14393.8330
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x86:* < 10.0.14393.8330
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:* < 10.0.17763.7678
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x86:* < 10.0.17763.7678
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* < 10.0.19044.6216
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* < 10.0.19045.6216
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* < 10.0.22621.5768
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* < 10.0.22631.5768
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* < 10.0.26100.4851
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* < 10.0.14393.8330
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* < 10.0.17763.7678
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* < 10.0.20348.3989
cpe:2.3:o:microsoft:windows_server_2022_23h2:*:*:*:*:*:*:*:* < 10.0.25398.1791
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* < 10.0.26100.4851

Affected products

Product	Versions
Microsoft · Windows 10 Version 1507	affected 10.0.10240.0 < 10.0.10240.21100
Microsoft · Windows 10 Version 1607	affected 10.0.14393.0 < 10.0.14393.8330
Microsoft · Windows 10 Version 1809	affected 10.0.17763.0 < 10.0.17763.7678
Microsoft · Windows 10 Version 21H2	affected 10.0.19044.0 < 10.0.19044.6216
Microsoft · Windows 10 Version 22H2	affected 10.0.19045.0 < 10.0.19045.6216
Microsoft · Windows 11 version 22H2	affected 10.0.22621.0 < 10.0.22621.5768
Microsoft · Windows 11 version 22H3	affected 10.0.22631.0 < 10.0.22631.5768
Microsoft · Windows 11 Version 23H2	affected 10.0.22631.0 < 10.0.22631.5768
Microsoft · Windows 11 Version 24H2	affected 10.0.26100.0 < 10.0.26100.4946
Microsoft · Windows Server 2008 R2 Service Pack 1	affected 6.1.7601.0 < 6.1.7601.27872
Microsoft · Windows Server 2008 R2 Service Pack 1 (Server Core installation)	affected 6.1.7601.0 < 6.1.7601.27872
Microsoft · Windows Server 2008 Service Pack 2	affected 6.0.6003.0 < 6.0.6003.23471
Microsoft · Windows Server 2008 Service Pack 2 (Server Core installation)	affected 6.0.6003.0 < 6.0.6003.23471
Microsoft · Windows Server 2012	affected 6.2.9200.0 < 6.2.9200.25622
Microsoft · Windows Server 2012 (Server Core installation)	affected 6.2.9200.0 < 6.2.9200.25622
Microsoft · Windows Server 2012 R2	affected 6.3.9600.0 < 6.3.9600.22725
Microsoft · Windows Server 2012 R2 (Server Core installation)	affected 6.3.9600.0 < 6.3.9600.22725
Microsoft · Windows Server 2016	affected 10.0.14393.0 < 10.0.14393.8330
Microsoft · Windows Server 2016 (Server Core installation)	affected 10.0.14393.0 < 10.0.14393.8330
Microsoft · Windows Server 2019	affected 10.0.17763.0 < 10.0.17763.7678

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53147

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD