CVE-2026-20805 — Microsoft Windows Information Disclosure Vulnerability
CVE-2026-20805: Microsoft Windows Information Disclosure Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Windows |
| Date added | 2026-01-13 |
| Due date | 2026-02-03 |
| Ransomware campaign use | Unknown |
Description
Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2026-20805 ; https://nvd.nist.gov/vuln/detail/CVE-2026-20805
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-20805
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog