Risk Letters

Exploited vulnerability

CVE-2021-36934

TLP:CLEAR

Microsoft Windows SAM Local Privilege Escalation Vulnerability

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.

Facts

  • Vendor: Microsoft
  • Product: Windows
  • CVSS: 7.8
  • EPSS (probability of exploitation within 30 days): 67.3 %
  • On CISA's Known Exploited Vulnerabilities list since: 10 February 2022
  • First known exploitation: 10 February 2022
  • CISA's deadline for US federal agencies: 24 February 2022
  • Weakness: CWE-1220
  • First seen by Risk Letters: 10 February 2022

Members see which Nordic sectors the flaw hits, and what to do about it.

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Data: NVD (public domain), CISA KEV, FIRST EPSS, MITRE ATT&CK, AlienVault OTX. NVD