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

Overview

Severity

Medium (CVSS 5.5)

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Category

Denial of Service

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2026-Aug

Released

2026-08-20

Description

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

Affected Products (1)

Windows

• Windows Remote Help

Security Updates (1)

• Release Notes

Acknowledgments

<a href="https://www.linkedin.com/in/nick-agathos/">Nick Agathos</a> with Commonwealth Bank of Australia

Revision History

• 2026-08-20: Information published.