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CVE-2019-1132 Microsoft CVE debrief

CVE-2019-1132 is a Microsoft Win32k privilege escalation vulnerability that CISA added to its Known Exploited Vulnerabilities (KEV) catalog on 2022-03-15, with remediation due by 2022-04-05. Because it is in KEV, organizations should treat it as actively exploited and prioritize Microsoft-recommended updates on affected Windows systems.

Vendor
Microsoft
Product
Win32k
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-15
Original CVE updated
2022-03-15
Advisory published
2022-03-15
Advisory updated
2022-03-15

Who should care

Windows administrators, endpoint security teams, vulnerability management teams, and incident responders should prioritize this CVE. Any organization running Microsoft Windows systems with Win32k exposure should verify patch status and confirm remediation before the KEV due date.

Technical summary

The available source corpus identifies CVE-2019-1132 only as a Microsoft Win32k privilege escalation vulnerability. CISA’s KEV listing confirms that it is a known exploited issue and directs defenders to apply updates per vendor instructions. No further technical exploit details are provided in the supplied sources.

Defensive priority

High. KEV inclusion indicates known exploitation and warrants immediate remediation planning, verification of patch deployment, and exposure review across Windows endpoints and servers.

Recommended defensive actions

  • Apply Microsoft updates per vendor instructions as soon as possible.
  • Verify that all affected Windows assets are patched and reported as compliant.
  • Prioritize internet-facing and high-value systems, then extend validation across the full fleet.
  • Use vulnerability management and endpoint tools to confirm remediation rather than relying on deployment intent alone.
  • Track this CVE as a KEV item in security operations until patch compliance is confirmed.

Evidence notes

Primary evidence comes from CISA’s Known Exploited Vulnerabilities catalog entry for CVE-2019-1132, which lists Microsoft Win32k, dateAdded 2022-03-15, dueDate 2022-04-05, and the required action to apply updates per vendor instructions. The supplied official links also include the CVE record and NVD entry, but the source corpus does not provide deeper technical disclosure or CVSS data.

Official resources

CISA added this vulnerability to the Known Exploited Vulnerabilities catalog on 2022-03-15 and set a remediation due date of 2022-04-05. The supplied sources do not include exploit details or a CVSS score.