CVE-2026-85370 WebDAV Elevation of Privilege Vulnerability
An authorized local attacker can exploit a use-after-free flaw in WebDAV to elevate privileges on Windows systems.
- 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-2026-85370?
CVE-2026-85370 is a high-severity use after free vulnerability in Microsoft Windows 10 Version 1607, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Use after free in WebDAV allows an authorized attacker to elevate privileges locally.
Weakness: CWE-416
Which versions are affected by CVE-2026-85370?
How do I fix CVE-2026-85370?
No fix has been published for CVE-2026-85370 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2026-85370 being exploited?
There is no known exploitation of CVE-2026-85370 in the wild and no public exploit code.
Sources
Also known as GHSA-q6hh-8ggh-277r.