CVE-2026-20805
Actively exploited. CVE-2026-20805 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-01-13) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally.
CSIRTS triage
- What
- The vulnerability allows an authorized attacker to disclose information locally through the Desktop Windows Manager.
- Who is affected
- Authorized users of Microsoft Windows are affected.
- Urgency
- Remediation is urgent as the vulnerability is actively exploited and critical.
- Action
- Apply the latest security updates from Microsoft.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 91% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalexploitedCVE-2026-20805: Microsoft Windows Information Disclosure Vulnerabilitycisa-kev · 2026-01-13
External references
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