Exploited vulnerabilities / CVE-2026-20805
Confirmed exploited · information disclosure · Microsoft WindowsCVE-2026-20805
Microsoft Windows information disclosure, confirmed exploited in the wild.
Microsoft Windows Desktop Windows Manager contains an information disclosure vulnerability that allows an authorized attacker to disclose information locally.
| CISA's name for it | Microsoft Windows Information Disclosure Vulnerability |
|---|---|
| Vendor and product | Microsoft · Windows |
| Type | information disclosure · CWE-200 |
| Exploited | Confirmed by CISA listed 13 January 2026 |
| Likelihood | more likely to be exploited than most |
| Deadline | 3 February 2026 · already passed |
| Used in ransomware | Not reported |
| Advisories | msrc.microsoft.com ↗ · nvd.nist.gov ↗ |
Three steps, in this order
Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited.
If you cannot patch now, restrict network access to the affected product.
Check for signs of compromise since the date it was added to the list.
| CISA's 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. |
|---|
Know before someone else finds it
Threat Landscape Monitoring fingerprints the software your internet-facing hosts disclose and matches it, every day, against this list and the exploitation scores. When a new entry touches something you run, you are told once, with the host and the fix. The free plan covers one domain.
CVE-2026-20805 in short
Is CVE-2026-20805 being exploited?
Yes. CISA added CVE-2026-20805 to its Known Exploited Vulnerabilities catalogue on 13 January 2026, which it does only on evidence of exploitation in the wild.
What is the CISA deadline for CVE-2026-20805?
US federal agencies must remediate it by 3 February 2026. Everyone else should treat that date as the latest safe point to patch an internet-facing system.
How likely is CVE-2026-20805 to be exploited in the next 30 days?
FIRST's Exploit Prediction Scoring System gives it 7.5%, the 94th percentile of every CVE it scores.
How do I fix CVE-2026-20805?
Apply the vendor's fix or mitigation; CISA lists only vulnerabilities seen exploited. If you cannot patch now, restrict network access to the affected product. Check for signs of compromise since the date it was added to the list.
Other Microsoft vulnerabilities being exploited
| CVE | Product | Type | Listed |
|---|---|---|---|
| CVE-2026-124194 | Office | exploited vulnerability | 10 November 2026 |
| CVE-2026-96951 | Windows | command injection | 13 October 2026 |
| CVE-2026-65660 | SharePoint | exploited vulnerability | 25 September 2026 |
| CVE-2026-81963 | Windows | privilege escalation | 8 September 2026 |
| CVE-2026-85880 | Windows | privilege escalation | 8 September 2026 |
| CVE-2019-1068 | SQL Server | remote code execution | 26 August 2026 |
Sources: CISA Known Exploited Vulnerabilities catalogue (released 10 November 2026) and FIRST EPSS. Page compiled automatically by SAK T.L.M, the threat-intelligence tool of SAK T.E.C, on 13 November 2026.