Path Traversal in Phoenix Contact Plcnext Engineer

CVE-2026-110935

The PFI plugin framework deployment routine does not validate path components when extracting archive entries to the local plugin repository. Archive entries containing relative path segments such as '..' are not rejected, allowing an unauthenticated local attacker to write files outside the plugin repository to arbitrary locations accessible with the current user's permissions which could result in full system compromise.

Vulnerability class: Path Traversal (Directory Traversal)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/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

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-110935?
CVE-2026-110935 is a high-severity vulnerability in Phoenix Contact Plcnext Engineer, classified under Path Traversal. CVSS score: 8.4/10. Published 2026-11-04.
How severe is CVE-2026-110935?
High severity. CVSS v3 base score is 8.4 out of 10.