CVE-2021-36934
Actively exploited. CVE-2021-36934 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-02-10) — exploitation has been observed in the wild, and US federal agencies are required to remediate it under BOD 22-01. Treat patching as urgent.
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2021-36934 is indexed in Metasploit and GitHub PoC. Expect opportunistic scanning and exploitation attempts — prioritize remediation.
If a Volume Shadow Copy (VSS) shadow copy of the system drive is available, users can read the SAM file which would allow any user to escalate privileges to SYSTEM level.
CSIRTS triage
- What
- Users can read the SAM file from a Volume Shadow Copy, allowing privilege escalation to SYSTEM level.
- Who is affected
- Users of Microsoft Windows with available Volume Shadow Copies are affected.
- Urgency
- Remediation is urgent due to the critical nature of the vulnerability and its exploitation status.
- Action
- Apply the latest security updates for Windows.
AI-assisted analysis generated from the source advisory — verify against the original.
⚡ Watch CVE-2021-36934
Get an email if CVE-2021-36934 is added to CISA KEV, gains public exploit code, or a new advisory cites it — max one per day, one-click unsubscribe.
Exploitation outlook
- Exploitation confirmedAlready exploited in the wild (CISA KEV) — the prediction phase is over. Patch now. Riskier than 99% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2021-36934 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- MetasploitA Metasploit Framework module targets this CVE — weaponized, point-and-click exploitation.look it up ↗
- GitHub PoCPublic proof-of-concept repositories on GitHub reference this CVE.look it up ↗
Advisory coverage (1)
- criticalexploitedCVE-2021-36934: Microsoft Windows SAM Local Privilege Escalation Vulnerabilitycisa-kev · 2022-02-10
External references
Embed the live status
— this badge updates automatically when the KEV or exploit status changes. How to embed it →
[](https://www.csirts.com/cve/CVE-2021-36934)