CVE-2026-55013: Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoof

Q: How do I fix CVE-2026-55013?

remote help: upgrade to 5.2.1040.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-55013 being exploited?

CVE-2026-55013 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-55013 affect?

CVE-2026-55013 affects remote help. Severity is high (CVSS 7.1). Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.

Q: How urgent is CVE-2026-55013?

Priority 40/100. High severity; On your watchlist

This month

HIGH 7.1WATCHLISTUPGRADE

CVE-2026-55013 is a high-severity flaw (CVSS 7.1) affecting remote help. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.

Why this priority

High severity
On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	7.1 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-427
Published	2026-08-20
Last modified	2026-10-18

Publisher (CNA): Microsoft Corporation · Vendor: microsoft

Last updated 2026-10-18 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-20 22:17 UTCPublished CVE record published
2026-10-18 20:10 UTCUpdated Record last modified

microsoft remote help UPGRADE

Affected: < 5.2.1040.0

Fixed in: 5.2.1040.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy remote-help || rpm -q remote-help || remote-help --version

2. UPGRADE to 5.2.1040.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade remote-help

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade remote-help

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-55013?

remote help: upgrade to 5.2.1040.0. Exact commands for each OS are on this page.

Is CVE-2026-55013 being exploited?

CVE-2026-55013 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-55013 affect?

CVE-2026-55013 affects remote help. Severity is high (CVSS 7.1). Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.

How urgent is CVE-2026-55013?

Priority 40/100. High severity; On your watchlist

Software pages

Windows vulnerabilities

Related CVEs

CVE-2026-55014 HIGH 7.8 UPGRADE Improper access control in Windows Remote Help Defense allows an authorized attacker to elevate privileges loc
CVE-2026-55015 MEDIUM 5.5 UPGRADE Uncontrolled search path element in Windows Remote Help allows an authorized attacker to deny service locally.

References

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