PT-2026-2708 · Microsoft · Windows

Goodbyeselene + 1 · Published 2026-01-13 · Updated 2026-01-13 · CVE-2026-20863

Positive Technologies (AI Summary)

CVSS v3.1

7.0

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Windows (affected versions not specified)

Description A double free issue exists within the Windows Win32K component, specifically related to ICOMP. This condition allows a locally authorized attacker to gain elevated privileges.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Double Free

Weakness Enumeration

CWE-415

Related Identifiers

BDU:2026-00642

CVE-2026-20863

Affected Products

Windows

References · 7

• https://bdu.fstec.ru/vul/2026-00642 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20863 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-20863 · Security Note
• https://osv.dev/vulnerability/CVE-2026-20863 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-20863 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-20863 · Security Note
• https://twitter.com/CVEnew/status/2011181517893214502 · Twitter Post