CVE-2025-34036

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2025-06-26. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
9.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 26%CVSS: 9.8Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
9.8
EG Score
9.8(medium)
EG Risk
75(Attend)
EG Risk 75/100SSVC: Attend

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation40% × 40%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
26%
EPSS %ILE
98%
KEV
Not listed

Published

June 24, 2025

Last Modified

November 20, 2025

Advisory Details (3)

Auto-updated Jul 28, 2026
⚠️ Active exploitation confirmed. No patch confirmed yet.
generic🔴 Active Exploitation

Kerner on Security: Remote Code Execution in CCTV-DVR affecting over 70 different vendors

https://web.archive.org/web/20160322204109/http://www.kerneronsec.com/2016/02/remote-code-execution-in-cctv-dvrs-of.html
generic🟡 PoC Available

Multiple CCTV-DVR Vendors - Remote Code Execution - Hardware remote Exploit

https://www.exploit-db.com/exploits/39596
generic

Shenzhen TVT CCTV-DVR Command Injection | Advisories | VulnCheck

https://vulncheck.com/advisories/shenzhen-tvt-cctv-dvr-command-injection

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 39× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-28 15:35 UTCEPSS rescore
  2. 2026-07-26 14:54 UTCEPSS rescore
  3. 2026-07-25 14:17 UTCEPSS rescore
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  6. 2026-07-23 02:54 UTCEG score recompute
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  1. 2026-07-11 08:27 UTCEPSS rescore
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  11. 2026-06-30 23:22 UTCEPSS rescore
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  21. 2026-06-25 13:49 UTCEPSS rescore
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  23. 2026-06-24 14:04 UTCEPSS rescore
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  25. 2026-06-23 21:32 UTCEPSS rescore
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  27. 2026-06-22 14:25 UTCEPSS rescore
  28. 2026-06-22 14:25 UTCEPSS rescore
  29. 2026-06-21 01:59 UTCEPSS rescore
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  37. 2026-06-14 23:17 UTCEPSS rescore
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  40. 2026-06-12 23:11 UTCEPSS rescore
  41. 2026-06-11 13:59 UTCEPSS rescore
  42. 2026-06-10 22:18 UTCEPSS rescore
  43. 2026-06-10 13:22 UTCEPSS rescore
  44. 2026-06-08 14:16 UTCEPSS rescore
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  46. 2026-06-07 15:24 UTCEPSS rescore
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  48. 2026-06-06 13:47 UTCEPSS rescore
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  50. 2026-06-05 22:46 UTCEPSS rescore
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  52. 2026-06-05 06:10 UTCEPSS rescore
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  54. 2026-06-04 13:12 UTCEPSS rescore
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  56. 2026-06-02 20:12 UTCEPSS rescore
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  61. 2026-05-31 00:16 UTCEPSS rescore
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  63. 2026-05-30 03:02 UTCEG score recompute
  64. 2026-05-30 03:02 UTCGHSA enrichment
  65. 2026-05-29 13:44 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2025-34036?
CVE-2025-34036 is a critical vulnerability published on June 24, 2025. 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…
When was CVE-2025-34036 disclosed?
CVE-2025-34036 was first published in the National Vulnerability Database on June 24, 2025, with the most recent update on November 20, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-34036 actively exploited?
CVE-2025-34036 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 26% probability of exploitation in the next 30 days, which ranks it in the top 2.2% of all scored CVEs.
What is the CVSS score of CVE-2025-34036?
CVE-2025-34036 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2025-34036?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-34036, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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