CVE-2025-4008: Meteobridge web interface command injection without authentication

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 17 September 2026. Confidence: high.

critical priorityUnauthenticated remote command execution as root on a network-exposed device, listed in CISA KEV with very high EPSS and public exploit detail.

What it is

The Meteobridge web interface, built from CGI shell scripts and C, exposes an endpoint vulnerable to command injection. Because the endpoint also lacks authentication, remote attackers can run arbitrary commands as root on affected devices. This matters because the device is internet- or network-reachable and compromise yields full control of the weather station system.

Impact

An attacker gains arbitrary command execution with root privileges, allowing full takeover of the device, data manipulation, and use as a pivot into the local network.

Attack surface

Reached over the network via the web interface endpoint; the CVSS vector shows adjacent network access (AV:A) with no privileges (PR:N) and no user interaction (UI:N). The CWE-306 entry confirms the critical function is exposed without authentication.

Exploitation

CISA added it to KEV on 2025-10-02 with a 2025-10-23 remediation due date, and EPSS gives a 30-day probability of 0.937 (99.8th percentile). A third-party advisory is tagged Exploit, indicating public exploit detail exists; no ransomware use is documented.

What to do

• Apply the vendor fix from the Meteobridge forum advisory; if no patch is available, discontinue use or isolate the device per CISA guidance.
• Remove the web interface from untrusted networks and restrict access to a trusted management VLAN or VPN.
• Place the device behind a firewall or reverse proxy that requires authentication and blocks direct access to the vulnerable endpoint.
• Monitor vendor channels for updated firmware and re-check exposure after any patch.
• If the device cannot be secured, power it off or replace it.

Detection

• Inspect web server and CGI logs for requests to the vulnerable endpoint, especially unusual query strings or shell metacharacters.
• Alert on unexpected outbound connections or new processes spawned by the web interface process.
• Monitor for creation of unexpected files, cron entries, or new accounts on the device.
• Use network monitoring to flag scanning or exploitation attempts against Meteobridge web interfaces.

This assessment is produced automatically and is not human-reviewed. Verify against the vendor advisory before acting on it.