CVE-2026-35717

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.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35717	Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:vivotek:fd8136_firmware:0300a:*:*:*:*:*:*:*

cpe:2.3:h:vivotek:fd8136:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-02 14:16

Updated : 2026-07-22 19:10

NVD link : CVE-2026-35717

Mitre link : CVE-2026-35717

CVE.ORG link : CVE-2026-35717

JSON object : View

Products Affected

vivotek

fd8136
fd8136_firmware

CWE

CWE-121

Stack-based Buffer Overflow

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