Home / Vulnerabilities / CVE-2021-36934
HIGH SEVERITY
CVE-2021-36934 Microsoft · Windows

Microsoft Windows SAM Local Privilege Escalation Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH
7.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:T/RC:C
Exploitation Likelihood

EPSS Prediction

90.90 %
Predictive Probability
Percentile Rank
99.6 th

Documented as more likely to be exploited than 99.6% of known CVEs.

Detection Date

Feb 10, 2022

Remediation Due

Feb 24, 2022

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

Apply updates per vendor instructions.

External Intelligence