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CVE-2016-0040 Microsoft CVE debrief

CVE-2016-0040 is a Microsoft Windows kernel privilege escalation vulnerability that CISA has listed in its Known Exploited Vulnerabilities (KEV) catalog. KEV inclusion means CISA considers it known to be exploited in the wild, so the practical response is to apply Microsoft updates according to vendor guidance and verify affected systems are brought into compliance.

Vendor
Microsoft
Product
Windows
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-03-28
Original CVE updated
2022-03-28
Advisory published
2022-03-28
Advisory updated
2022-03-28

Who should care

Windows administrators, endpoint and server owners, vulnerability management teams, and SOC/IR staff responsible for Microsoft Windows fleets should prioritize this CVE, especially where local privilege boundaries matter or patching is delayed.

Technical summary

The available official metadata identifies this issue as a Microsoft Windows kernel privilege escalation vulnerability. CISA’s KEV catalog records it as a known exploited vulnerability and instructs defenders to apply updates per vendor instructions. No further technical details are provided in the supplied corpus, so the safest interpretation is that the risk is unauthorized elevation of privileges on affected Windows systems.

Defensive priority

High

Recommended defensive actions

  • Apply Microsoft updates per vendor instructions as soon as possible.
  • Confirm affected Windows systems are included in patch and compliance reporting.
  • Use the CISA KEV due date (2022-04-18) as the remediation deadline for risk tracking.
  • Validate that endpoint and server inventories are current so exposed Windows hosts are not missed.
  • Review privileged access monitoring on Windows systems for unusual elevation activity while remediation is in progress.

Evidence notes

This debrief is based only on the supplied CISA KEV metadata and official record links. The source corpus identifies the vulnerability as a Microsoft Windows kernel privilege escalation issue, marks it as known exploited, and states the required action is to apply updates per vendor instructions. No exploit details, affected build list, or CVSS score were provided in the corpus.

Official resources

CISA added this vulnerability to the Known Exploited Vulnerabilities catalog on 2022-03-28 and set a remediation due date of 2022-04-18. The corpus does not provide additional vendor advisory text or exploit specifics.