🛡️ CVE-2026-35717
🟡 CVSS 6.3 — Medium ✅ No Known Exploit CWE-121 NVD
6.3
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 6.3
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE CWE-121
Public Exploit ✅ No
Source NVD
Published 2026-06-02
Updated 2026-06-04
Modified 2026-06-03
Fix URL N/A

Affected Packages

Software From version Fixed in
fd8136-firmware — —
unknown — —

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