CVE-2021-33554: Geutebrück and UDP Technology cameras command injection

Automated analysis

Generated by VULONE's analysis model from the NVD record, CISA KEV and EPSS data on 19 September 2026. Confidence: medium.

high priorityRemote code execution on internet-adjacent camera devices with public exploit code and a very high EPSS score, though exploitation requires prior administrative credentials.

What it is

Multiple Geutebrück and UDP Technology camera devices contain an OS command injection flaw (CWE-78) that lets an attacker run arbitrary commands on the device. The vulnerability is remotely reachable over the network but requires high privileges, meaning an attacker must first hold valid administrative credentials. Because these are IP cameras, successful exploitation gives full control of a device that often sits on the same network as other physical security and building systems.

Impact

An attacker with administrative access gains remote code execution on the camera, allowing full compromise of the device, including manipulation of video feeds and use of the camera as a foothold into the surrounding network.

Attack surface

The flaw is reached over the network (AV:N) with no user interaction (UI:N), but the CVSS vector requires high privileges (PR:H), so valid administrative credentials are needed before the injection can be triggered.

Exploitation

Not listed in CISA KEV, but EPSS is very high at 0.5705 (99th percentile), and public references are tagged Exploit, indicating working exploit code is publicly available.

What to do

• Apply the vendor firmware updates referenced in CISA ICS advisory ICSA-21-208-03; patch all listed G-CAM and G-Code models.
• Change default and weak administrative credentials on all cameras and enforce unique, strong passwords.
• Isolate cameras on a dedicated VLAN with strict firewall rules limiting management access to trusted hosts only.
• Disable or restrict remote management interfaces and unnecessary services exposed to untrusted networks.
• Monitor vendor and CISA advisories for updated firmware, since the affected product list is broad and fixes may be staged.

Detection

• Monitor camera and management logs for unexpected command execution, shell activity, or abnormal process spawning.
• Alert on authentication events from unusual source IPs or at unusual times against camera management interfaces.
• Watch network traffic for command-injection patterns or outbound connections from camera VLANs to unexpected destinations.
• Baseline camera firmware versions and flag devices still running versions predating the advisory fix.

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