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.

More advisories, affected versions and source history

cve-program · CVE-2018-8589

Published

Windows Server 2008

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Windows Server 2008",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "32-bit Systems Service Pack 2"
                        },
                        {
                            "status": "affected",
                            "version": "32-bit Systems Service Pack 2 (Server Core installation)"
                        },
                        {
                            "status": "affected",
                            "version": "Itanium-Based Systems Service Pack 2"
                        },
                        {
                            "status": "affected",
                            "version": "x64-based Systems Service Pack 2"
                        },
                        {
                            "status": "affected",
                            "version": "x64-based Systems Service Pack 2 (Server Core installation)"
                        }
                    ]
                }

Windows 7

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Windows 7",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "32-bit Systems Service Pack 1"
                        },
                        {
                            "status": "affected",
                            "version": "x64-based Systems Service Pack 1"
                        }
                    ]
                }

Windows Server 2008 R2

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "product": "Windows Server 2008 R2",
                    "vendor": "Microsoft",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "Itanium-Based Systems Service Pack 1"
                        },
                        {
                            "status": "affected",
                            "version": "x64-based Systems Service Pack 1"
                        },
                        {
                            "status": "affected",
                            "version": "x64-based Systems Service Pack 1 (Server Core installation)"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON