CVE-2026-35716 Details
Description
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.
A stack-based buffer overflow vulnerability has been identified in the VIVOTEK FD8136 camera firmware FD8136-VVTK-0300a. This vulnerability resides in the motion_privacy.cgi binary, which is accessed through the /cgi-bin/admin/setpm.cgi, /cgi-bin/admin/setmd.cgi, and /cgi-bin/admin/setmd_profile.cgi endpoints, all of which are symlinked to the same binary. The issue allows authenticated remote attackers to execute arbitrary code as root by exploiting an oversized n1 parameter in a POST request. The vulnerability arises because the parameter value is copied into a fixed-size stack buffer of 0xa4 bytes without proper bounds checking, overwriting the saved link register. Additionally, the binary is compiled without stack canaries, leaving it susceptible to exploitation.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35716 | [email protected] | Third Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-121 | Stack-based Buffer Overflow | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| vivotek fd8136 firmware | 0300a |
CPE
Remediation
| |
| vivotek fd8136 | All versions |
CPE
Remediation
| |
Change History
7 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 22, 2026 | CVE Translated | [email protected] |
| Jul 5, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 3, 2026 | Initial Analysis | [email protected] |
| Jun 3, 2026 | CVE Modified | CISA-ADP |
| Jun 2, 2026 | New CVE Received | [email protected] |