November 3, 2021 · Applied Cybernetics Group
CVE-2021-33739 Microsoft Windows
Microsoft Desktop Window Manager (DWM) Core Library Privilege Escalation Vulnerability
- Added to KEV
2021-11-03- Federal due date
2021-11-17- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 93.9th percentile (score 0.066, as of
2026-11-06) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- ATT&CK
- T1068 , T1598.002 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-33739
CISA short description
Microsoft Desktop Window Manager (DWM) Core Library contains an unspecified vulnerability that allows for privilege escalation.
Required action
Apply updates per vendor instructions.