CVE-2026-35717
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
A stack-based buffer overflow in the export_language.cgi binary of VIVOTEK FD8136 firmware FD8136-VVTK-0300a allows authenticated remote attackers to execute arbitrary code as root via a crafted POST request to the /cgi-bin/admin/export_language.cgi endpoint. The handler passes the attacker-controlled Content-Length value directly to fread() as the read size into a fixed-size 0x60-byte stack buffer, overwriting the saved link register.
Risk Assessment
An authenticated attacker can fully compromise the camera, executing arbitrary code as root, enabling surveillance, configuration modification, or use in a botnet.
Recommendation
Immediately update the VIVOTEK FD8136 firmware to the latest available version if a patch is released. Otherwise, restrict administrative interface access to trusted networks and enforce strong authentication.
Original NVD description (English source)
A stack-based buffer overflow in the export_language.cgi binary in VIVOTEK FD8136 firmware FD8136-VVTK-0300a allows authenticated remote attackers to execute arbitrary code as root via a crafted POST request to the /cgi-bin/admin/export_language.cgi endpoint. The handler passes the attacker-controlled Content-Length value directly to fread() as the read size into a fixed-size 0x60-byte stack buffer, overwriting the saved link register. The binary is compiled without stack canaries.