CVE-2026-55015 Microsoft Remote Help Denial of Service Vulnerability

Medium 5.5 Published 20 Aug 2026 Updated 28 Oct 2026

An authorized local attacker can cause a denial of service in Windows Remote Help via uncontrolled search path elements.

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-2026-55015?

CVE-2026-55015 is a medium-severity denial of service vulnerability in Microsoft Windows Remote Help, published on 20 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Uncontrolled search path element in Windows Remote Help allows an authorized attacker to deny service locally.

Weakness: CWE-427

Which versions are affected by CVE-2026-55015?

It affects 1 product.

Products include Microsoft Remote Help.

How do I fix CVE-2026-55015?

No fix has been published for CVE-2026-55015 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2026-55015 being exploited?

There is no known exploitation of CVE-2026-55015 in the wild and no public exploit code.

Sources

Also known as GHSA-pjfm-62f3-8p84.