What is CVE-2026-0522?

CVE-2026-0522 is a high-severity vulnerability in Vertigis Fm, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 8.8/10. Published 2026-04-01.

How severe is CVE-2026-0522?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Vertigis Fm

CVE-2026-0522

A local file inclusion vulnerability in the upload/download flow of the VertiGIS FM application allows authenticated attackers to read arbitrary files from the server by manipulating a file's path during its upload. When the file is subsequently downloaded, the file in the attacker controlled path is returned. Due to the application's ASP.NET architecture, this could potentially lead to remote code execution when the "web.config" file is obtained. Furthermore, the application resolves UNC paths which may enable NTLM-relaying attacks. This issue affects VertiGIS FM: 10.5.00119 (0d29d428).

EPSS: 0.006 (45.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Vertigis Fm — versions 10.11.363
Vertigis Fm — versions 0

Weakness classification (CWE)

CWE-610 — Externally Controlled Reference to a Resource in Another Sphere

References

vulnerability@ncsc.ch (Exploit, technical-description, Third Party Advisory, third-party-advisory)
vulnerability@ncsc.ch (vendor-advisory, Vendor Advisory)

Frequently asked questions

What is CVE-2026-0522?: CVE-2026-0522 is a high-severity vulnerability in Vertigis Fm, classified under Externally Controlled Reference to a Resource in Another Sphere. CVSS score: 8.8/10. Published 2026-04-01.
How severe is CVE-2026-0522?: High severity. CVSS v3 base score is 8.8 out of 10.