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CVE-2022-21882

Win32k Elevation of Privilege Vulnerability

CVSS 7 HIGHEPSS 55.7%● KEVCWE-787
Vexday Risk Score
98Fix now
SSVC decision (CISA)
Act
Exploitation + impact → act immediately
CVSS 7EPSS 55.7%KEV simPoC públicaNuclei —Metasploit simPatch referenciado
Lifecycle
09 Feb 2021Metasploit module available
11 Jan 2022Published on NVD
27 Jan 2022Public PoC
04 Feb 2022Active exploitation (CISA KEV)
Recommendation: Patch as soon as possible — active exploitation confirmed.
In short

A flaw in Windows' display driver interface allows an attacker with local access to run malicious code with system-level privileges. This is dangerous because it can give attackers complete control over your computer.

Technical detail

CWE-787 (Out-of-bounds Write) in Win32k.sys allows local authenticated users to perform privilege escalation through improper memory handling in the graphics subsystem. Exploitation requires local code execution and results in SYSTEM-level access.

Summary generated and translated by AI from the official description.
Win32k Elevation of Privilege Vulnerability
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
Affected products
Microsoft · Windows 10 Version 1809Microsoft · Windows 10 Version 1909Microsoft · Windows 10 Version 20H2Microsoft · Windows 10 Version 21H1Microsoft · Windows 10 Version 21H2Microsoft · Windows 11 version 21H2Microsoft · Windows Server 2019Microsoft · Windows Server 2019 (Server Core installation)Microsoft · Windows Server 2022Microsoft · Windows Server version 20H2
public PoCs found — 6
githubgithub.com/KaLendsi/CVE-2022-21882★ 462githubgithub.com/L4ys/CVE-2022-21882★ 196githubgithub.com/sailay1996/cve-2022-21882-poc★ 49githubgithub.com/David-Honisch/CVE-2022-21882★ 8githubgithub.com/r1l4-i3pur1l4/CVE-2022-21882★ 6cve_referencepacketstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.htmlunverified
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References
http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.htmlhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21882https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21882https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21882