What is CVE-2026-55015?

CVE-2026-55015 is a medium-severity vulnerability in Microsoft Remote Help, classified under Uncontrolled Search Path Element. CVSS score: 5.5/10. Published 2026-08-20.

How severe is CVE-2026-55015?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Vulnerability in Microsoft Remote Help

CVE-2026-55015

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

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (60.9th percentile), scored 2026-10-06.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 61st percentile — 60.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.010 · change: +0.005

Affected products

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

Microsoft Remote Help Denial of Service Vulnerability (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-55015?: CVE-2026-55015 is a medium-severity vulnerability in Microsoft Remote Help, classified under Uncontrolled Search Path Element. CVSS score: 5.5/10. Published 2026-08-20.
How severe is CVE-2026-55015?: Medium severity. CVSS v3 base score is 5.5 out of 10.