FKIE_CVE-2026-35717

Vulnerability from fkie_nvd - Published: 2026-06-02 14:16 - Updated: 2026-07-22 19:10
Severity
6.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Summary
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.
References
cve@mitre.orghttps://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35717Third Party Advisory
Impacted products
Vendor Product Version
vivotek fd8136_firmware 0300a
vivotek fd8136 -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
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      "nodes": [
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          "cpeMatch": [
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              "criteria": "cpe:2.3:o:vivotek:fd8136_firmware:0300a:*:*:*:*:*:*:*",
              "matchCriteriaId": "E3E87285-9E56-4692-A236-C3A3E277AA03",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "Un desbordamiento de b\u00fafer basado en pila en el binario export_language.cgi en el firmware VIVOTEK FD8136 FD8136-VVTK-0300a permite a atacantes remotos autenticados ejecutar c\u00f3digo arbitrario como root a trav\u00e9s de una solicitud POST manipulada al endpoint /cgi-bin/admin/export_language.cgi. El gestor pasa el valor Content-Length controlado por el atacante directamente a fread() como el tama\u00f1o de lectura en un b\u00fafer de pila de tama\u00f1o fijo de 0x60 bytes, sobrescribiendo el registro de enlace guardado. El binario se compila sin canarios de pila."
    }
  ],
  "id": "CVE-2026-35717",
  "lastModified": "2026-07-22T19:10:00.120",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 6.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
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    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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              "exploitation": "none"
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            {
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            {
              "technicalImpact": "total"
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          "role": "CISA Coordinator",
          "timestamp": "2026-06-03T13:42:53.968052Z",
          "version": "2.0.3"
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  "published": "2026-06-02T14:16:51.123",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
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      "url": "https://github.com/xchg-rax-rax/vulnerability-research/tree/main/CVE-2026-35717"
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  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
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          "value": "CWE-121"
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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