CVE-2026-35716

6.3 mediumEPSS 0.3%

Medium (6.3) in vivotek fd8136 firmware. EPSS 0.3% chance of exploitation in the next 30 days.

A stack-based buffer overflow in the motion_privacy.cgi binary in VIVOTEK FD8136 firmware FD8136-VVTK-0300a allows authenticated remote attackers to execute arbitrary code as root via an oversized n1 parameter in a POST request to the /cgi-bin/admin/setpm.cgi, /cgi-bin/admin/setmd.cgi, or /cgi-bin/admin/setmd_profile.cgi endpoint (all symlinks to the same binary). The parameter value is copied into a fixed-size 0xa4-byte stack buffer without bounds checking, overwriting the saved link register. The binary is compiled without stack canaries.

Severity

CVSS 3.1

6.3 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 25% of CVEs (scores of 2026-10-31)
CWE: CWE-121
Published: 2026-06-02
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

Affected

vivotek:fd8136_firmware

References

https://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35716

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