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ExploitedNot in CISA KEV yet

CVE-2025-34036

Exploitation confirmed. First attested on 2026-01-07 by GCVE · kevintel, GCVE · shadowserver.

  • Published2025-06-24
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2025-06-2401:15CVE publishedNVD
  2. 2026-01-0723:26Listed as exploited by GCVEGCVE
  3. 2026-01-0723:26Exploitation first reportedGCVE

Versions per branch

NVD
Tvt td-2004ts-cl firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Tvt td-2004ts-cl-c firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published
Tvt td-2008ts-cl firmwareversion to verify
BranchAffectedFixed in
—all versionsno fix published

27 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As VulnCheck, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Shenzhen TVT CCTV-DVRother versions: not affected
    Affected
    • = 0no fix statedsemver

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-04-07

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • GCVEexploitation2026-01-07
  • CISA-ADPSSVC decisionpoc2025-06-24
  • CNACVSS 4.010known since 2026-10-23
  • NVDCVSS 3.19.8read 2026-10-23
  • CNAweakness (CWE)CWE-78known since 2026-10-23
  • NVDweakness (CWE)CWE-78read 2026-10-23
  • FIRST EPSSEPSS score30.9 %read 2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 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/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:X/V:X/RE:X/U:X
Published
2025-06-24
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-ppp6-57cw-px5q

Frequently asked questions

What is CVE-2025-34036?

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.

Is CVE-2025-34036 actively exploited?

A proof-of-concept exploit exists for CVE-2025-34036, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2025-34036?

CVE-2025-34036 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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