CVE-2026-69425 Windows NTFS Tampering Vulnerability

Medium 4.7 Published 8 Sep 2026 Updated 14 Oct 2026

An authorized local attacker can tamper with files via improper link resolution in Windows NTFS, requiring a security patch.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-69425?

CVE-2026-69425 is a medium-severity path traversal vulnerability in Microsoft Windows 11 23h2, published on 8 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Improper link resolution before file access ('link following') in Windows NTFS allows an authorized attacker to perform tampering locally.

Weakness: CWE-59

Which versions are affected by CVE-2026-69425?

It affects 4 products.

Products include Microsoft Windows 11 23h2, Microsoft Windows 11 24h2, Microsoft Windows 11 25h2, Microsoft Windows 11 26h1.

How do I fix CVE-2026-69425?

No fix has been published for CVE-2026-69425 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2026-69425 being exploited?

There is no known exploitation of CVE-2026-69425 in the wild and no public exploit code.

All Microsoft Windows 11 23h2 vulnerabilities

Sources

Also known as GHSA-w5cm-4vrf-93h3.