CVE-2025-54099
published 2025-09-09CVE-2025-54099: Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
PriorityP341high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.35%
27.3th percentile
Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Affected
47 ranges· showing 25
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_10_1507 | < 10.0.10240.21128 | 10.0.10240.21128 |
| microsoft | windows_10_1607 | < 10.0.14393.8422 | 10.0.14393.8422 |
| microsoft | windows_10_1809 | < 10.0.17763.7792 | 10.0.17763.7792 |
| microsoft | windows_10_21h2 | < 10.0.19044.6332 | 10.0.19044.6332 |
| microsoft | windows_10_22h2 | < 10.0.19045.6332 | 10.0.19045.6332 |
| microsoft | windows_10_version_1507 | >= 10.0.10240.0 < 10.0.10240.21128 | 10.0.10240.21128 |
| microsoft | windows_10_version_1607 | >= 10.0.14393.0 < 10.0.14393.8422 | 10.0.14393.8422 |
| microsoft | windows_10_version_1809 | >= 10.0.17763.0 < 10.0.17763.7792 | 10.0.17763.7792 |
| microsoft | windows_10_version_21h2 | >= 10.0.19044.0 < 10.0.19044.6332 | 10.0.19044.6332 |
| microsoft | windows_10_version_22h2 | >= 10.0.19045.0 < 10.0.19045.6332 | 10.0.19045.6332 |
| microsoft | windows_11_22h2 | < 10.0.22621.5909 | 10.0.22621.5909 |
| microsoft | windows_11_23h2 | < 10.0.22631.5909 | 10.0.22631.5909 |
| microsoft | windows_11_24h2 | < 10.0.26100.6508 | 10.0.26100.6508 |
| microsoft | windows_11_version_22h2 | >= 10.0.22621.0 < 10.0.22621.5909 | 10.0.22621.5909 |
| microsoft | windows_11_version_22h3 | >= 10.0.22631.0 < 10.0.22631.5909 | 10.0.22631.5909 |
| microsoft | windows_11_version_23h2 | >= 10.0.22631.0 < 10.0.22631.5909 | 10.0.22631.5909 |
| microsoft | windows_11_version_24h2 | >= 10.0.26100.0 < 10.0.26100.6584 | 10.0.26100.6584 |
| microsoft | windows_server_2008 | — | — |
| microsoft | windows_server_2008_r2_service_pack_1 | >= 6.1.7601.0 < 6.1.7601.27929 | 6.1.7601.27929 |
| microsoft | windows_server_2008_service_pack_2 | >= 6.0.6003.0 < 6.0.6003.23529 | 6.0.6003.23529 |
| microsoft | windows_server_2012 | — | — |
| microsoft | windows_server_2012 | >= 6.2.9200.0 < 6.2.9200.25675 | 6.2.9200.25675 |
| microsoft | windows_server_2012_r2 | >= 6.3.9600.0 < 6.3.9600.22774 | 6.3.9600.22774 |
| microsoft | windows_server_2016 | < 10.0.14393.8422 | 10.0.14393.8422 |
| microsoft | windows_server_2016 | >= 10.0.14393.0 < 10.0.14393.8422 | 10.0.14393.8422 |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_msrc7.0HIGH
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GHSA
GHSA-pjc3-rv39-c4v5: Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally
ghsa_unreviewed·2025-09-09
CVE-2025-54099 [HIGH] CWE-121 GHSA-pjc3-rv39-c4v5: Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally
Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
Microsoft
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
vendor_msrc·2025-09-09·CVSS 7.0
CVE-2025-54099 [HIGH] CWE-121 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
Description: Stack-based buffer overflow in Windows Ancillary Function Driver for WinSock allows an authorized attacker to elevate privileges locally.
FAQ: According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.
FAQ: What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited this vulnerability could gain SYSTEM privileges.
Windows Ancillary Function Driver for WinSock: Windows Ancillary Function Driver for WinSock
Microsoft: Microsoft
Customer Action Required: Yes
Impact: Elevation o
No detection rules found.
No public exploits indexed.
2025-09-09
Published