CVE-2025-34036: Tvt Td-2004ts-cl-c Firmware command injection (CVSS 9.8)

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.

CVSS 3.1 breakdown

Attack vectorNetwork

Attack complexityLow

Privileges requiredNone

User interactionNone

ScopeUnchanged

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Tvt Td-2004ts-cl-c Firmwareall versions

Tvt Td-2004ts-cl Firmwareall versions

Tvt Td-2008ts-cl Firmwareall versions

Tvt Td-2104ts-cl-a Firmwareall versions

Tvt Td-2104ts-cl Firmwareall versions

Tvt Td-2104ts-hc Firmwareall versions

Tvt Td-2104ts-hp Firmwareall versions

Tvt Td-2108ts-cl-a Firmwareall versions

Tvt Td-2108ts-cl Firmwareall versions

Tvt Td-2108ts-hc Firmwareall versions

Tvt Td-2108ts-hp Firmwareall versions

Tvt Td-2116te-hp Firmwareall versions

Tvt Td-2116ts-cl Firmwareall versions

Tvt Td-2116ts-hc Firmwareall versions

Tvt Td-2704ts-hc Firmwareall versions

Tvt Td-2704ts-hp Firmwareall versions

Tvt Td-2708te-hk Firmwareall versions

Tvt Td-2708te-hp Firmwareall versions

Tvt Td-2708ts-hc Firmwareall versions

Tvt Td-2708ts-hp Firmwareall versions

Tvt Td-2716tc-hc Firmwareall versions

Tvt Td-2716tc-hp Firmwareall versions

Tvt Td-2716td-hc Firmwareall versions

Tvt Td-2716te-hc-a Firmwareall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

https://vulncheck.com/advisories/shenzhen-tvt-cctv-dvr-command-injectionThird Party Advisory
https://web.archive.org/web/20160322204109/http://www.kerneronsec.com/2016/02/remote-code-execution-in-cctv-dvrs-of.htmlExploitThird Party Advisory
https://www.exploit-db.com/exploits/39596ExploitThird Party Advisory

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

Frequently asked

Is CVE-2025-34036 being actively exploited?

CVE-2025-34036 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 30.9%.

How severe is CVE-2025-34036?

CVE-2025-34036 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 30.9% probability of exploitation.

Which products are affected by CVE-2025-34036?

Affected 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, and 19 more.

How do I fix CVE-2025-34036?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-34036 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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