What is CVE-2026-55013?

CVE-2026-55013 is a high-severity vulnerability in Microsoft Remote Help, classified under Uncontrolled Search Path Element. CVSS score: 7.1/10. Published 2026-08-20.

How severe is CVE-2026-55013?

High severity. CVSS v3 base score is 7.1 out of 10.

Vulnerability in Microsoft Remote Help

CVE-2026-55013

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

Published 2026-08-20 · last modified 2026-08-26.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.005 (37.9th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 37.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.005 · change: +0.002

Affected products

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

Windows Remote Help Defense Spoofing Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-55013?: CVE-2026-55013 is a high-severity vulnerability in Microsoft Remote Help, classified under Uncontrolled Search Path Element. CVSS score: 7.1/10. Published 2026-08-20.
How severe is CVE-2026-55013?: High severity. CVSS v3 base score is 7.1 out of 10.