Risk Letters

Exploited vulnerability

CVE-2022-21882

TLP:CLEAR

Microsoft Win32k Privilege Escalation Vulnerability

Microsoft Win32k contains an unspecified vulnerability that allows for privilege escalation.

Facts

  • Vendor: Microsoft
  • Product: Win32k
  • CVSS: 7
  • EPSS (probability of exploitation within 30 days): 59.2 %
  • On CISA's Known Exploited Vulnerabilities list since: 4 February 2022
  • First known exploitation: 4 February 2022
  • Used in ransomware campaigns (per CISA): Yes
  • CISA's deadline for US federal agencies: 18 February 2022
  • Weakness: CWE-787
  • First seen by Risk Letters: 4 February 2022

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