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CVE-2018-8589: Microsoft Win32k Privilege Escalation Vulnerability
Microsoft Win32k · in CISA KEV since 2022-05-23
2022-05-23added to KEV
2022-06-13federal remediation due date
3.02%EPSS exploit probability (30 days) 86.9th percentile
7.8 HIGHCVSS 3.1
Unknownknown ransomware use
1,286days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | — |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2018-11-14 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2018-8589.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.