What is CVE-2026-118633?

CVE-2026-118633 is a high-severity vulnerability in Sophos Sg Utm, classified under Path Traversal: '.../...//'. CVSS score: 8.1/10. Published 2026-10-28.

How severe is CVE-2026-118633?

High severity. CVSS v3 base score is 8.1 out of 10.

Path Traversal in Sophos Sg Utm

CVE-2026-118633

A path traversal vulnerability allows a remote unauthenticated attacker to execute arbitrary code as root in Sophos UTM (all versions) after winning a race condition by sustaining repeated attacks for a few minutes when the email proxy is used with scanning enabled. Sophos UTM is end-of-life and the patch must be installed manually.

Published 2026-10-28.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Sophos Sg Utm

Weakness classification (CWE)

CWE-35 — Path Traversal: '.../...//'

References

www.sophos.com/en-us/security-advisories/sophos-sa-20261028-utm-rce

Frequently asked questions

What is CVE-2026-118633?: CVE-2026-118633 is a high-severity vulnerability in Sophos Sg Utm, classified under Path Traversal: '.../...//'. CVSS score: 8.1/10. Published 2026-10-28.
How severe is CVE-2026-118633?: High severity. CVSS v3 base score is 8.1 out of 10.