CVE-2021-33739
HIGHCVSS 8.4/10Actively ExploitedEPSS 6.55%
Last modified
CVE-2021-33739 is a high-severity vulnerability rated 8.4/10 on the CVSS scale. Microsoft DWM Core Library Elevation of Privilege Vulnerability. CISA has confirmed active exploitation in the wild. EPSS estimates a 6.55% chance of exploitation in the next 30 days.
Description
Microsoft DWM Core Library Elevation of Privilege Vulnerability
Metrics
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Windows 10 1909 | < 10.0.18363.1621 |
| Microsoft | Windows 10 2004 | < 10.0.19041.1052 |
| Microsoft | Windows 10 20h2 | < 10.0.19042.1052 |
| Microsoft | Windows 10 21h1 | < 10.0.19043.1052 |
| Microsoft | Windows Server 2004 | < 10.0.19041.1052 |
| Microsoft | Windows Server 20h2 | < 10.0.19042.1052 |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33739Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33739Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-33739US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2021-33739?
Microsoft DWM Core Library Elevation of Privilege Vulnerability
How severe is CVE-2021-33739?
CVE-2021-33739 has a CVSS score of 8.4/10 (HIGH severity). The EPSS model estimates a 6.55% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2021-33739?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-33733A vulnerability has been identified in SINEC NMS (All versio…7.2
- CVE-2021-33734A vulnerability has been identified in SINEC NMS (All versio…7.2
- CVE-2021-33735A vulnerability has been identified in SINEC NMS (All versio…7.2
- CVE-2021-33736A vulnerability has been identified in SINEC NMS (All versio…7.2
- CVE-2021-33737A vulnerability has been identified in SIMATIC CP 343-1 (inc…7.5
- CVE-2021-33738A vulnerability has been identified in JT2Go (All versions <…3.3
- CVE-2021-3374Directory traversal in RStudio Shiny Server before 1.5.16 al…5.3
- CVE-2021-33740Windows Media Remote Code Execution Vulnerability7.8
- CVE-2021-33741Microsoft Edge (Chromium-based) Elevation of Privilege Vulne…8.2
- CVE-2021-33742Windows MSHTML Platform Remote Code Execution Vulnerability7.5
- CVE-2021-33743Windows Projected File System Elevation of Privilege Vulnera…7.8
- CVE-2021-33744Windows Secure Kernel Mode Security Feature Bypass Vulnerabi…5.3
Are you affected by CVE-2021-33739?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST