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CVE-2023-25774

Estado: ModificadaAlta (7.5)—

A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of SoftEther VPN 5.02. A set of specially crafted network connections can lead to denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability.

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)

Softether — VPN

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-25774",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2023-25774",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
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          ],
          "version": "2.0.3",
          "timestamp": "2024-07-31T21:16:47.704947Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "talos-cna@cisco.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
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  "affected": [
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        {
          "vendor": "SoftEther VPN",
          "product": "SoftEther VPN",
          "versions": [
            {
              "status": "affected",
              "version": "5.01.9674"
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            {
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          "vendor": "softether",
          "product": "vpn",
          "versions": [
            {
              "status": "affected",
              "version": "5.02"
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          ],
          "defaultStatus": "unknown"
        }
      ]
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  ],
  "published": "2023-10-12T16:15:11.297",
  "references": [
    {
      "url": "https://talosintelligence.com/vulnerability_reports/TALOS-2023-1743",
      "tags": [
        "Exploit",
        "Third Party Advisory"
      ],
      "source": "talos-cna@cisco.com"
    },
    {
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "talos-cna@cisco.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
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          "lang": "en",
          "value": "NVD-CWE-noinfo"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A denial-of-service vulnerability exists in the vpnserver ConnectionAccept() functionality of SoftEther VPN 5.02. A set of specially crafted network connections can lead to denial of service. An attacker can send a sequence of malicious packets to trigger this vulnerability."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de Denegación de Servicio (DoS) en la funcionalidad vpnserver ConnectionAccept() de SoftEther VPN 5.02. Un conjunto de conexiones de red especialmente manipuladas puede provocar una Denegación de Servicio (DoS). Un atacante puede enviar una secuencia de paquetes maliciosos para desencadenar esta vulnerabilidad."
    }
  ],
  "lastModified": "2026-06-17T05:41:57.750",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:softether:vpn:5.02:*:*:*:*:*:*:*",
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          "operator": "OR"
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  "sourceIdentifier": "talos-cna@cisco.com"
}