CVE-2018-8589CISA KEV

Microsoft Win32k Privilege Escalation Vulnerability

Severity unknownCVSS unknownCheck the vendor advisory for fixed versions

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

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.

Product: Win32k
Added to KEV: 23 May 2022
Federal remediation due: 13 Jun 2022
Known ransomware use: Not reported

Page history

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Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

Explore global source statements, affected packages and advisory history for CVE-2018-8589. The catalog has a separate collection scope from Microsoft release records.

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CVE-2018-8589 · CVE overview and exploitation status

cve-program · CVE-2018-8589

Related changes

Linked by CVE identifier

Microsoft Win32k Privilege Escalation Vulnerability · CISA KEV deadline · 13 Jun 2022
Microsoft Win32k Privilege Escalation Vulnerability · Added to CISA KEV · 23 May 2022