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Unauthenticated Root Command Injection in AVTECH DVR Devices
CVE-2025-34054 is an unauthenticated OS command-injection vulnerability in AVTECH DVR devices. The CGI query handler passes attacker-controlled username or queryb64str parameters to wget without input sanitization, allowing injected shell commands to execute as root. The affected product listing also includes AVTECH IP camera and NVR devices, although the technical description specifically identifies DVR devices. Evidence of exploitation was observed on January 4, 2025.
What it means and what to do now: patch path, interim mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
Successful exploitation executes attacker-supplied shell commands with root privileges on the affected device, enabling privileged control of the system. The C0XMO Gafgyt variant includes an HTTP exploit for this vulnerability in its propagation scanner.
If you can’t patch tonight, do this now.
FortiGuard IPS provides a signature for attacks exploiting CVE-2025-34054. A fixed firmware version or vendor-provided workaround is not identified.
Patch, then assume compromise.
Apply the vendor-provided firmware update or security fix for affected AVTECH DVR models as soon as it is available and verified for the specific device/version in use. Because the issue is a pre-authentication root command injection in a network-exposed CGI handler, remediation should prioritize eliminating vulnerable firmware from internet-facing deployments. If no fixed firmware is available, replace affected devices or remove the vulnerable functionality from exposure.
No public exploits tracked yet. Mallory keeps watching.
8 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.