CVE-2021-33739
KEVMicrosoft Desktop Window Manager (DWM) Core Library Privilege Escalation Vulnerability
Description
Microsoft Desktop Window Manager (DWM) Core Library contains an unspecified vulnerability that allows for privilege escalation.
Microsoft DWM Core Library Elevation of Privilege Vulnerability
CVSS 3.1 vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedJun 8, 2021
Last modifiedJun 17, 2026
Added to KEVNov 3, 2021
Remediation dueNov 17, 2021
References
- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33739PatchVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33739US Government Resource
0 recent articles mention this CVE
73
Risk assessment · High
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1805 days
- CVSS
- 8.4 HIGH
- EPSS (30-day exploit probability)
- 6.6% · top 6% of all CVEs
- Weakness
- NVD-CWE-noinfo
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.