CVE-2025-34036
high-risk
Published 2025-06-24
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.
Do I need to act?
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10.9% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (4)
Third Party Advisory
https://vulncheck.com/advisories/shenzhen-tvt-cctv-dvr-command-injection
65
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
11/34 · Low
Exposure
22/34 · High