# 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.

- **Severity:** Critical 10.0 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 24 Jun 2025
- **Updated:** 7 Apr 2026
- **Also known as:** GHSA-ppp6-57cw-px5q

## 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 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2025-34036?

It affects 30 products.


Products: 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, Tvt Td-2104ts-Hp Firmware, Tvt Td-2108ts-Cl-a Firmware, Tvt Td-2108ts-Cl Firmware, Tvt Td-2108ts-Hc Firmware, Tvt Td-2108ts-Hp Firmware, Tvt Td-2116te-Hp Firmware, Tvt Td-2116ts-Cl Firmware, Tvt Td-2116ts-Hc Firmware, Tvt Td-2704ts-Hc Firmware, Tvt Td-2704ts-Hp Firmware, Tvt Td-2708te-Hk Firmware, Tvt Td-2708te-Hp Firmware, Tvt Td-2708ts-Hc Firmware, Tvt Td-2708ts-Hp Firmware and 10 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.

## Is CVE-2025-34036 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34036 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-34036 and fix it if it is affected.

What it is: 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.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34036 exists.

Affected product: Shenzhen TVT CCTV-DVR. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-34036/ (Markdown: https://insights.sbomify.com/CVE-2025-34036/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-34036
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-34036
- OSV: https://osv.dev/vulnerability/CVE-2025-34036

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-34036/
Summaries are generated and may contain mistakes; the official description above is the record.