CVE-2026-85853

7.0High

Published 13 Oct 2026 · NVD status: Undergoing Analysis · AI triage by gemini-3.8-flash

7.0High

Attack vector: Local
Complexity: High
Privileges needed: Low
User interaction: None
Impact: Full C/I/A compromise
Weakness: CWE-125

Impact

Local attackers with an existing account can elevate their privileges on the system. They require local access and must win a race or meet complex execution conditions.

Root cause

An out-of-bounds read flaw in the Windows DWM Core Library (d鋪core.dll) leaks sensitive memory or corrupts state to trigger privilege escalation.

Affected systems

Versions not listed — check the vendor advisory.

CVSS v3.1 · CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Fix & remediation

Install the Microsoft security update for your Windows version via Windows Update or WSUS once released; no workaround or mitigation is provided.

shell

$ Get-HotFix

AI-suggested. Run it in staging first and check it against the vendor advisory. Why?

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NVD description

Out-of-bounds read in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-85853

Source: nvd.nist.gov/vuln/detail/CVE-2026-85853