Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U H H H 7.8 .0302 87.0 YES
AFFECTED Product Versions Fixed Windows Server 2008 32-bit Systems Service Pack 2 – — Windows 7 32-bit Systems Service Pack 1 – — Windows Server 2008 R2 Itanium-Based Systems Service Pack 1 – —
TIMELINE Mar 14 Reserved by microsoft Nov 14 Published (CNA: microsoft) May 23 Added to CISA KEV, remediation due 2022-06-13
An elevation of privilege vulnerability exists when Windows improperly handles calls to Win32k.sys, aka "Windows Win32k Elevation of Privilege Vulnerability." This affects Windows Server 2008, Windows 7, Windows Server 2008 R2.
| Date | Event | Detail |
|---|---|---|
| March 14, 2018 | Reserved | Reserved by microsoft |
| November 14, 2018 | Published | Published (CNA: microsoft) |
| May 23, 2022 | KEV ADDED | Added to CISA KEV, remediation due 2022-06-13 |
Authoritative record: CVE-2018-8589 at cve.org
Vendors: microsoft
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2018-8589 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
