CVE-2025-25038 is a critical (CVSS 9.8) OS command injection flaw in the web management interface of MiniDVBLinux 5.4 and earlier. An unauthenticated remote caller can run commands as root. The record lists no fixed release, so cut off network access to the interface and check the vendor site for updates.
What's affected
- Product: MiniDVBLinux, a Linux distribution for digital video recorder and set top box devices.
- Affected: version 5.4 and earlier. VulnCheck's advisory says the affected range is not more precisely defined.
- Fixed: no patched version is listed in the record or in the advisory we read. Check the project site at minidvblinux.de for news before assuming a fix exists.
- Exposure: any device whose web management interface can be reached over a network. No login is needed.
- Exploitation: the record's description says the Shadowserver Foundation observed exploitation evidence on 2024-04-10 UTC. The CVE is not marked in CISA's KEV catalog in our record, but VulnCheck lists it in its own KEV database.
How to check if you're exposed
Work out whether you run this software at all. Devices based on MiniDVBLinux are often hobbyist or home media boxes, so ask whoever set them up. On the device, the release file or the web interface footer usually shows the version.
Then check reachability from the places an outsider could come from. From a machine outside your network, scan only your own public address for the web ports the device uses.
nmap -Pn -p 80,443,8080 <your-public-ip>
From inside, find which hosts answer on the management port and whether a router rule forwards that port to the internet. Look at your router's port forwarding table and any UPnP mappings. If the device web page loads from outside your home or office network, treat it as exposed and assume it may already be compromised.
What to do now
- Remove any port forward or UPnP mapping that exposes the web interface, and block the device from the internet at the router.
- Put the interface behind a VPN or restrict it to one trusted management address if you need remote access.
- Check the vendor site and the project's community channels for an updated release, and read the advisory text before you install anything.
- If the device was reachable from the internet, treat it as compromised: back up only the data you need, reinstall from a clean image, and change every password that was ever typed on it.
- If you cannot isolate or replace it, retire the device. A root level flaw with no fix is not worth keeping online.
- Record the device in your inventory so a future advisory for it reaches someone.
Why it matters
The flaw is OS command injection. The management interface passes user supplied input into operating system commands without cleaning it first, so special characters can end the intended command and start another one. Because the web service runs as root, the caller gets full control of the device.
- CWE-78 is improper neutralization of special elements in an operating system command. Input is placed into a command string that the system then runs, so the caller can add commands of their own.
Three details make this worse than the score alone suggests. It needs no login, it works over the network, and the description reports exploitation evidence from a scanning organisation. Embedded media devices rarely get monitored, rarely get patched and often sit on a flat home or office network, so one compromised box can become a foothold for reaching other machines. A device like this is a good candidate for a hard rule: never expose its management page to the internet.
Quick check
Is there a patch for CVE-2025-25038?
The record and the advisory we read list no fixed version. Check the vendor site for news, and meanwhile remove network exposure.
Is it exploited in the wild?
The record's description says the Shadowserver Foundation saw exploitation evidence on 2024-04-10 UTC, and VulnCheck lists it in its KEV database. It is not flagged in CISA KEV in our record.
Sources
Last reviewed: 19 October 2026.
