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MSRC compact vulnerability detail

CVE-2026-20805 · Desktop Window Manager Information Disclosure Vulnerability

Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.

Severity
Important
Impact
Information Disclosure
CVSS
5.5 base · 4.8 temporal
Release
2026-01-13
Signals
Desktop Window Manager Information Disclosure Exploited: Yes Publicly disclosed: No Exploitability: Exploitation Detected
CWE
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Patch Diff
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Resolved binary override
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Description
Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.
FAQ / Articles
Windows Win32K - ICOMP Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Windows Win32K - ICOMP allows an authorized attacker to disclose information locally.
FAQ
What type of information could be disclosed by this vulnerability? The type of information that could be disclosed if an attacker successfully exploited this vulnerability is a section address from a remote ALPC port which is user-mode memory.
Desktop Windows Manager Information Disclosure Vulnerability
Exposure of sensitive information to an unauthorized actor in Desktop Windows Manager allows an authorized attacker to disclose information locally.