Vulnerability · Published Jun 24, 2025 · Assigned by VulnCheck

CVE-2025-34036Shenzhen TVT CCTV-DVR Command Injection

Critical 10.0

In plain English

A critical-severity OS command injection in CCTV-DVR from Shenzhen TVT. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 30.9% (higher than 98% of all known vulnerabilities).

Severity (CVSS 4.0)10.0Critical

Exploit odds (30 days)30.9%top 1.7% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Shenzhen TVT	CCTV-DVR	0

Weakness: CWE-78 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

References

https://web.archive.org/web/20160322204109/http://www.kerneronsec.com/2016/02/remote-code-execution-in-cctv-dvrs-of.html third-party-advisory, exploit, technical-description
https://www.exploit-db.com/exploits/39596 third-party-advisory, exploit
https://vulncheck.com/advisories/shenzhen-tvt-cctv-dvr-command-injection third-party-advisory