CVE-2026-4795

Estado: AplazadaMedia (6.5)—

A missing authorization vulnerability in Zyxel GS1200-5v3 firmware versions through 1.00(ACPS.2)C0, GS1200-8v3 firmware versions through 1.00(ACPT.2)C0, GS1200-5HPv3 firmware versions through 1.00(ACPU.2)C0, GS1200-8HPv3 firmware versions through 1.00(ACPV.2)C0, and GS1200-10v3 firmware versions through 1.00(ACPW.2)C0 could allow a LAN-based, unauthenticated attacker to read the system configuration from a log file via a crafted HTTP request.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Puntuación base: 6.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.30%
Percentil entre todas las CVEs puntuadas: 21
Fecha de la puntuación: 5/10/2026

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 (5)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Zyxel — Gs1200-10v3^AI Zyxel — Gs1200-5hpv3^AI Zyxel — Gs1200-5v3^AI Zyxel — Gs1200-8hpv3^AI Zyxel — Gs1200-8v3^AI

CWE

CWE-862

Referencias

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-missing-authorization-vulnerability-in-gs1200v3-series-switches-05-26-2026

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-4795",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4795",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-26T12:17:48.434391Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@zyxel.com.tw",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "ADJACENT_NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@zyxel.com.tw",
      "affectedData": [
        {
          "vendor": "Zyxel",
          "product": "GS1200-5v3 firmware",
          "versions": [
            {
              "status": "affected",
              "version": "<= 1.00(ACPS.2)C0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Zyxel",
          "product": "GS1200-8v3 firmware",
          "versions": [
            {
              "status": "affected",
              "version": "<= 1.00(ACPT.2)C0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Zyxel",
          "product": "GS1200-5HPv3 firmware",
          "versions": [
            {
              "status": "affected",
              "version": "<= 1.00(ACPU.2)C0"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Zyxel",
          "product": "GS1200-8HPv3 firmware",
          "versions": [
            {
              "status": "affected",
              "version": "<= 1.00(ACPV.2)C0"
            }
          ],
          "defaultStatus": "unaffected"
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        {
          "vendor": "Zyxel",
          "product": "GS1200-10v3 firmware",
          "versions": [
            {
              "status": "affected",
              "version": "<= 1.00(ACPW.2)C0"
            }
          ],
          "defaultStatus": "unaffected"
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  ],
  "published": "2026-05-26T02:16:40.360",
  "references": [
    {
      "url": "https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-missing-authorization-vulnerability-in-gs1200v3-series-switches-05-26-2026",
      "source": "security@zyxel.com.tw"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@zyxel.com.tw",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A missing authorization vulnerability in Zyxel GS1200-5v3 firmware versions through 1.00(ACPS.2)C0, GS1200-8v3 firmware versions through 1.00(ACPT.2)C0,  GS1200-5HPv3 firmware versions through 1.00(ACPU.2)C0, GS1200-8HPv3 firmware versions through 1.00(ACPV.2)C0, and GS1200-10v3 firmware versions through 1.00(ACPW.2)C0 could allow a LAN-based, unauthenticated attacker to read the system configuration from a log file via a crafted HTTP request."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de autorización faltante en las versiones de firmware de Zyxel GS1200-5v3 hasta la 1.00(ACPS.2)C0, versiones de firmware de GS1200-8v3 hasta la 1.00(ACPT.2)C0, versiones de firmware de GS1200-5HPv3 hasta la 1.00(ACPU.2)C0, versiones de firmware de GS1200-8HPv3 hasta la 1.00(ACPV.2)C0, y versiones de firmware de GS1200-10v3 hasta la 1.00(ACPW.2)C0 podría permitir a un atacante no autenticado, basado en la LAN, leer la configuración del sistema de un archivo de registro a través de una solicitud HTTP manipulada."
    }
  ],
  "lastModified": "2026-07-24T11:10:00.170",
  "sourceIdentifier": "security@zyxel.com.tw"
}