CVE-2026-0522: A local file inclusion vulnerability in the upload/download flow of the VertiGIS FM application allows authent

This month

HIGH 8.8DOWNGRADE

CVE-2026-0522 is a high-severity flaw (CVSS 8.8) affecting fm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.6% (top 51%)
CISA exploited list	No
Weakness	CWE-610
Published	2026-04-01
Last modified	2026-06-17

Publisher (CNA): Switzerland Government Common Vulnerability Program · Vendor: vertigis

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-01 14:16 UTCPublished CVE record published
2026-06-17 10:10 UTCUpdated Record last modified

vertigis fm DOWNGRADE

Affected: 10.11.363

Fixed in: no fixed release known

Safe to downgrade to: a release before 10.11.363

1. Check installed version

apt-cache policy fm || rpm -q fm || fm --version

2. No fixed release: DOWNGRADE to a release before 10.11.363 (Debian / Ubuntu)

apt-cache madison fm sudo apt install fm=<VERSION_BEFORE_10.11.363> sudo apt-mark hold fm

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list fm sudo dnf downgrade fm-<VERSION_BEFORE_10.11.363> sudo dnf versionlock add fm

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-0522?

fm: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2026-0522 being exploited?

CVE-2026-0522 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-0522 affect?

CVE-2026-0522 affects fm. Severity is high (CVSS 8.8). 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 subsequ

How urgent is CVE-2026-0522?

Priority 48/100. High severity; Public exploit reference

Software pages

.NET vulnerabilities

Related CVEs

CVE-2026-3877 MEDIUM 6.1 UPGRADE A reflected cross-site scripting (XSS) vulnerability in the dashboard search functionality of the VertiGIS FM

References

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