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CVE-2026-35716

Estado: ModificadaMedia (6.3)—

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.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Vivotek — Fd8136 Firmware

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-35716",
  "cveTags": [],
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        "ssvcData": {
          "id": "CVE-2026-35716",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-03T13:38:27.964339Z"
        }
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    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
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        "impactScore": 3.4,
        "exploitabilityScore": 2.8
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  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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  ],
  "published": "2026-06-02T16:16:37.187",
  "references": [
    {
      "url": "https://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35716",
      "tags": [
        "Third Party Advisory"
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      "source": "cve@mitre.org"
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  "vulnStatus": "Modified",
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "lang": "en",
          "value": "CWE-121"
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  "descriptions": [
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      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de búfer basado en pila en el binario motion_privacy.cgi en el firmware VIVOTEK FD8136 FD8136-VVTK-0300a permite a atacantes remotos autenticados ejecutar código arbitrario como root a través de un parámetro n1 sobredimensionado en una solicitud POST al endpoint /cgi-bin/admin/setpm.cgi, /cgi-bin/admin/setmd.cgi, o /cgi-bin/admin/setmd_profile.cgi (todos enlaces simbólicos al mismo binario). El valor del parámetro se copia en un búfer de pila de tamaño fijo de 0xa4 bytes sin comprobación de límites, sobrescribiendo el registro de enlace guardado. El binario se compila sin canarios de pila."
    }
  ],
  "lastModified": "2026-07-22T19:10:00.120",
  "configurations": [
    {
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  "sourceIdentifier": "cve@mitre.org"
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