Actively exploited · Published Aug 13, 2024 · Assigned by microsoft

CVE-2024-38193Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

High 7.8 Exploited

In plain English

A high-severity use-after-free in Windows 10 Version 1507 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on August 13, 2024). The chance it is exploited in the next 30 days is estimated at 28.7% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)28.7%top 1.8% of all CVEs
Exploited in the wildYesCISA KEV since Aug 13, 2024
Attack tooling1Public PoC

CISA guidance

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

Federal agencies must remediate by Sep 3, 2024.

Official description

Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows 11 Version 24H2 10.0.26100.0 – before 10.0.26100.1457
Microsoft Windows 10 Version 1809 10.0.17763.0 – before 10.0.17763.6189
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.6189
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.6189
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.2655
Microsoft Windows 11 version 21H2 10.0.0 – before 10.0.22000.3147
Microsoft Windows 10 Version 21H2 10.0.19043.0 – before 10.0.19044.4780
Microsoft Windows 11 version 22H2 10.0.22621.0 – before 10.0.22621.4037
Microsoft Windows 10 Version 22H2 10.0.19045.0 – before 10.0.19045.4780
Microsoft Windows 11 version 22H3 10.0.22631.0 – before 10.0.22631.4037
Microsoft Windows 11 Version 23H2 10.0.22631.0 – before 10.0.22631.4037
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – before 10.0.25398.1085
Microsoft Windows 10 Version 1507 10.0.10240.0 – before 10.0.10240.20751
Microsoft Windows 10 Version 1607 10.0.14393.0 – before 10.0.14393.7259
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.7259
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.7259
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.22825
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.22825
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.22825
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.27277
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.27277
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.25031
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.25031
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.22134
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.22134

Weakness: CWE-416 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

References