FKIE_CVE-2026-50752

Vulnerability from fkie_nvd - Published: 2026-06-08 12:16 - Updated: 2026-07-23 07:10
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Summary
A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could allow interception or modification of traffic traversing the VPN tunnel.
References
cve@checkpoint.comhttps://support.checkpoint.com/results/sk/sk185035
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Quantum Security Gateway",
          "vendor": "checkpoint",
          "versions": [
            {
              "status": "affected",
              "version": "R82.10 with Jumbo Hotfix Take 19 or below"
            },
            {
              "status": "affected",
              "version": "R82 with Jumbo Hotfix Take 103 or below"
            },
            {
              "status": "affected",
              "version": "R81.20 with Jumbo Hotfix Take 141 or below"
            },
            {
              "status": "affected",
              "version": "R81.10, R81, and R80.40"
            }
          ]
        },
        {
          "product": "Spark Firewalls",
          "vendor": "checkpoint",
          "versions": [
            {
              "status": "affected",
              "version": "R80.20.X, R81.10.X, and R82.00.X"
            }
          ]
        }
      ],
      "source": "cve@checkpoint.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A weakness in the certificate validation logic of the deprecated IKEv1 key exchange may allow an unauthenticated attacker positioned as a man-in-the-middle to bypass certificate validation in VPN site-to-site connections that use certificate-based authentication. Successful exploitation could allow interception or modification of traffic traversing the VPN tunnel."
    },
    {
      "lang": "es",
      "value": "Una debilidad en la l\u00f3gica de validaci\u00f3n de certificados del intercambio de claves IKEv1 obsoleto podr\u00eda permitir a un atacante no autenticado posicionado como un man-in-the-middle eludir la validaci\u00f3n de certificados en conexiones VPN de sitio a sitio que utilizan autenticaci\u00f3n basada en certificados. Una explotaci\u00f3n exitosa podr\u00eda permitir la interceptaci\u00f3n o modificaci\u00f3n del tr\u00e1fico que atraviesa el t\u00fanel VPN."
    }
  ],
  "id": "CVE-2026-50752",
  "lastModified": "2026-07-23T07:10:00.113",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.2,
        "impactScore": 5.2,
        "source": "cve@checkpoint.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-50752",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-06-09T03:55:37.901004Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-06-08T12:16:32.503",
  "references": [
    {
      "source": "cve@checkpoint.com",
      "url": "https://support.checkpoint.com/results/sk/sk185035"
    }
  ],
  "sourceIdentifier": "cve@checkpoint.com",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-295"
        }
      ],
      "source": "cve@checkpoint.com",
      "type": "Secondary"
    }
  ]
}



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