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PatchSiren cyber security CVE debrief

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.

Sources and references

Verified primary and authoritative sources

  • CVE-2019-1132 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2019-1132

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2019-1132 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2019-1132

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

Supplemental references

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.