Actively exploited
Listed in CISA’s Known Exploited Vulnerabilities catalog since January 13, 2026.
CVE-2026-20805
Microsoft Windows Information Disclosure Vulnerability
Added to KEV January 13, 2026
Alert details
- Source feed
- CISA KEV
- CVE ID
- CVE-2026-20805
- CWE
- CWE-200
- Affected products
- Windows · Microsoft Windows · Microsoft
What happened
Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally.
What it means for your business
Microsoft Windows is listed in CISA's Known Exploited Vulnerabilities catalog (CVE-2026-20805). Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally. CISA remediation due date: 2026-02-03. If you need help checking exposure, call (864) 335-9223.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: February 3, 2026
Sources
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