PT-2026-40262 · Microsoft · Windows Dwm Core Library+1

Namnp · Published 2026-05-12 · Updated 2026-05-12 · CVE-2026-42896

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description An integer overflow or wraparound in the Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

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

LPE

Integer Overflow

Heap Based Buffer Overflow

Weakness Enumeration

CWE-190

CWE-122

Related Identifiers

BDU:2026-06762

CVE-2026-42896

Affected Products

Windows

Windows Dwm Core Library

References · 7

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42896 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2026-42896 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-42896 · Security Note
• https://bdu.fstec.ru/vul/2026-06762 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-42896 · Security Note
• https://t.me/CVEtracker/53528 · Telegram Post
• https://feedly.com/cve/CVE-2026-42896 · Note