Actively exploited · Published May 9, 2023 · Assigned by microsoft

CVE-2023-29336Win32k 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 May 9, 2023). The chance it is exploited in the next 30 days is estimated at 41.2% (higher than 99% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Apply updates per vendor instructions.

Severity (CVSS 3.1)7.8High
Exploit odds (30 days)41.2%top 1.3% of all CVEs
Exploited in the wildYesCISA KEV since May 9, 2023
Attack tooling1Public PoC

CISA guidance

Apply updates per vendor instructions.

Federal agencies must remediate by May 30, 2023.

Official description

Win32k Elevation of Privilege Vulnerability

Affected products (as reported)

VendorProductVersions
Microsoft Windows 10 Version 1507 10.0.10240.0 – before 10.0.10240.19926
Microsoft Windows 10 Version 1607 10.0.14393.0 – before 10.0.14393.5921
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.5921
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.5921
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.22070
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 – before 6.0.6003.22070
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 – before 6.0.6003.22070
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 – before 6.1.7601.26519
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 – before 6.1.7601.26519
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.24266
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.24266
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.20969
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.20969

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

References