VULNERABILITY INTELLIGENCE

CVE-2026-35717

CVSS score6.3 MEDIUM
EPSS probability0.26%
CISA KEVNot currently listed
Published2026-06-02
Last modified2026-07-22
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Description

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.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-121

Primary references