CVE-2025-34036
CRITICALCVSS v3
9.8
CRITICAL
EPSS Score
19.3%
exploit probability
CISA KEV
No
known exploited
Exploitation
—
SSVC status
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 injec
Technical Details
- CVSS v3 Vector
- 3.1
- Published
- 6/24/2025
- Last Modified
- 11/20/2025
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 injec
Is CVE-2025-34036 actively exploited?
Active exploitation of CVE-2025-34036 has not been confirmed. The EPSS score is 19.3%, indicating the estimated probability of exploitation in the next 30 days.
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 3.1.
Is CVE-2025-34036 affecting your environment?
Use isMalicious to check if any of your IPs or domains are associated with this vulnerability's IOCs.