Vulnerability · Published Nov 4, 2026 · Assigned by CERTVDE
CVE-2026-110935Path traversal in plug-in deployment
High 8.4
In plain English
A high-severity path traversal in PLCnext Engineer from Phoenix Contact. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Phoenix Contact | PLCnext Engineer | 0.0 – before 2026.6 |
Weakness: CWE-22 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H