CVE-2021-36934
Microsoft Windows SAM Local Privilege Escalation Vulnerability
CVSS
—
No CVSS
EPSS
67.3%
p99
KEV
YES
Feb 10, 2022
Exploit Today
80
0-100
Published: — · Last modified: —
67.3%EPSS · 30 days67.3%
2026-06-302026-07-16
Product
Microsoft / Windows
Vulnerability
Microsoft Windows SAM Local Privilege Escalation Vulnerability
Added to KEV
Feb 10, 2022
Remediate by
Feb 24, 2022
Known ransomware use
No
Summary description
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.
Required action
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-36934
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