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Vulnerability record · CVE-2025-34036 · published 24 June 2025

CVE-2025-34036: Tvt td-2108ts-cl firmware os command injection vulnerability

Tvt · Td 2108ts Cl Firmware

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.

10.0 CVSS 4.0 Critical EPSS 31% · top 1.8% CWE-78 · OS command injection
10.0CVSS 4.0 base score
31%EPSS exploitation probability, 30 days
NoNot in CISA KEV
30Affected product versions listed by NVD
4References, 3 tagged exploit
17 Jun 2026Last modified by NVD

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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

30 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

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

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Source: NIST National Vulnerability Database (record CVE-2025-34036), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.