CVE-2026-55013: Windows Remote Help Defense Spoofing Vulnerability

Overview

Severity

High (CVSS 7.1)

CVSS Vector

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

Category

Spoofing

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 Defense allows an authorized attacker to perform spoofing 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.