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

highCVSS 7.1CVE-2026-55013
Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.

CSIRTS triage

What
Uncontrolled search path element allows authorized attackers to perform spoofing locally.
Who is affected
Systems with Windows Remote Help installed and authorized users are affected.
Urgency
High severity (CVSS 7.1) spoofing attack is locally exploitable and should be prioritized.
Action
Apply Microsoft security update for Windows Remote Help search path handling.

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Details

Source
Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity
high — CVSS 7.1
Published
2026-08-11
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55013

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-55013coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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