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CVE-2018-8589

CISA KEV

Published May 23, 2022 · Updated April 3, 2026

high
Official Description+

A privilege escalation vulnerability exists when Windows improperly handles calls to Win32k.sys. An attacker who successfully exploited this vulnerability could run remote code in the security context of the local system.

Affected Products

VendorProduct
MicrosoftWin32k

Patch Status

Patch by 2022-06-13

Recommended Actions

  1. Check if your systems use any of the affected products listed above.
  2. Apply vendor patches immediately if available.
  3. This vulnerability is in CISA's Known Exploited Vulnerabilities catalog — prioritize remediation.
  4. Monitor vendor advisories for updates and additional mitigations.
  5. Review logs for indicators of compromise related to CVE-2018-8589.