cve 2026 20920

About this tag
CVE-2026-20920 is a kernel-level elevation-of-privilege vulnerability in the Windows Win32k component, specifically a use-after-free in the ICOMP surface. An authorized local attacker can trigger this bug to escalate privileges to SYSTEM. This vulnerability belongs to the familiar family of Win32k kernel memory-safety defects that have repeatedly yielded high-impact post-compromise primitives. Administrators should treat affected hosts as high priority for remediation and hunting until the exact KB-to-SKU mapping is installed and validated. Microsoft's advisory confirms the entry, and exploit details are being withheld pending patch deployment.

  1. CVE-2026-20920 Windows Win32k ICOMP Use After Free Privilege Escalation

    Microsoft has recorded CVE-2026-20920 as a kernel-level elevation-of-privilege vulnerability in the Windows Win32K component: a use‑after‑free in the ICOMP surface that an authorized local attacker can trigger to escalate privileges to SYSTEM. Evidence in vendor advisories and community trackers...
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    • cve 2026 20920 kernel memory safety privilege escalation win32k icomp
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    • Forum: Security Alerts

  2. CVE-2026-20920: Win32k Kernel Elevation of Privilege Explained

    Microsoft’s advisory listing for CVE-2026-20920 places this entry squarely in the long-running, high-impact family of Win32k kernel vulnerabilities that enable local elevation of privilege; the vendor’s published description and the accompanying confidence metric make clear that defenders should...
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    • cve 2026 20920 elevation privilege patch management win32k
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    • Forum: Security Alerts