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CVE-2018-8611 Microsoft CVE debrief

CVE-2018-8611 is a Microsoft Windows kernel privilege escalation vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2022-05-24. Because it is listed in KEV, defenders should treat it as a high-priority remediation item and follow Microsoft’s update guidance. The available source corpus does not provide deeper technical details, affected versions, or a CVSS score.

Vendor
Microsoft
Product
Windows
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-05-24
Original CVE updated
2022-05-24
Advisory published
2022-05-24
Advisory updated
2022-05-24

Who should care

Windows administrators, endpoint security teams, vulnerability management teams, and IT operations staff responsible for Microsoft-managed fleets should prioritize this issue, especially on systems exposed to untrusted users or shared-admin environments.

Technical summary

The supplied sources identify the issue as a Microsoft Windows kernel privilege escalation vulnerability. CISA’s KEV entry records the vendor as Microsoft, product as Windows, and directs defenders to apply updates per vendor instructions. No additional exploitation mechanics, affected build ranges, or impact scoring are included in the provided corpus.

Defensive priority

High. KEV inclusion means the issue is treated as known exploited and should be remediated on an expedited timeline. The catalog entry lists a due date of 2022-06-14 for applying updates per vendor instructions.

Recommended defensive actions

  • Apply Microsoft updates and remediation guidance as soon as possible for all affected Windows systems.
  • Prioritize remediation on endpoints and servers where users have interactive access or elevated privilege boundaries matter most.
  • Verify fleet-wide patch status and confirm no devices remain on versions addressed by Microsoft for this issue.
  • Use the CISA KEV catalog and Microsoft advisory pages to track any additional vendor guidance or mitigation updates.

Evidence notes

Evidence is limited to the supplied CISA KEV source item metadata and the referenced official records. The corpus supports the vulnerability name, vendor, product, KEV status, date added (2022-05-24), due date (2022-06-14), and the instruction to apply updates per vendor instructions. No CVSS score, affected version list, or exploitation narrative was provided.

Official resources

CISA added CVE-2018-8611 to the Known Exploited Vulnerabilities catalog on 2022-05-24, with remediation due by 2022-06-14. The supplied corpus does not include a public exploitation writeup or a CVSS score.