CVE-2025-34036 Shenzhen TVT CCTV-DVR Command Injection
Unauthenticated attackers can execute arbitrary commands as root on Shenzhen TVT CCTV-DVRs via unsanitized input in the web server's language extraction feature.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-34036?
CVE-2025-34036 is a critical command injection vulnerability in Shenzhen TVT CCTV-DVR, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An OS command injection vulnerability exists in white-labeled DVRs manufactured by TVT, affecting a custom HTTP service called "Cross Web Server" that listens on TCP ports 81 and 82. The web interface fails to sanitize input in the URI path passed to the language extraction functionality. When the server processes a request to /language/[lang]/index.html, it uses the [lang] input unsafely in a tar extraction command without proper escaping. This allows an unauthenticated remote attacker to inject shell commands and achieve arbitrary command execution as root. Exploitation evidence was observed by the Shadowserver Foundation on 2025-02-06 UTC.
Weakness: CWE-78
Which versions are affected by CVE-2025-34036?
It affects 30 products.
Products include Tvt Td-2004ts-Cl-C Firmware, Tvt Td-2004ts-Cl Firmware, Tvt Td-2008ts-Cl Firmware, Tvt Td-2104ts-Cl-a Firmware, Tvt Td-2104ts-Cl Firmware, Tvt Td-2104ts-Hc Firmware and 24 more.
How do I fix CVE-2025-34036?
No fix has been published for CVE-2025-34036 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-34036 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34036 exists.
Sources
Also known as GHSA-ppp6-57cw-px5q.