VertiGIS FM: Externally Controlled Reference to a Resource in Another Sphere
CVE-2026-0522 is a high-severity externally controlled reference to a resource in another sphere vulnerability in VertiGIS FM from VertiGIS, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an attacker with a low-privileged account, without any action from a user. The record lists version 10.11.363 as the first without the flaw, so updating VertiGIS FM to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.62% chance of exploitation within 30 days, higher than 50% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update VertiGIS FM to 10.11.363 or a later version.
- Read the advisory on support.vertigis.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| VertiGIS | VertiGIS FM | before 10.11.363 | 10.11.363 |
| Vertigis | Fm | 10.11.363 | Not stated |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 4.0 | 7.4 | High | CNA (ncsc.ch) |
| CVSS 3.1 | 8.8 | High | NVD |
Official description
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).
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Externally Controlled Reference to a Resource in Another Sphere
The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere.
More Externally Controlled Reference to a Resource in Another Sphere vulnerabilities (CWE-610)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: poc, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Technical write-ups (may include proof of concept)
- redguard.ch/blog/2026/04/01/advisory-vertigis-vertigisfm/Exploit, Third Party Advisory
Recent Externally Controlled Reference to a Resource in Another Sphere vulnerabilities
- 9.8 Critical severity
- 7.3 High severity
- 7.3 High severity
- 7.8 High severity
- 7.1 High severity
- 7.3 High severity
Spotted an error? Tell us.