FKIE_CVE-2025-13086

Vulnerability from fkie_nvd - Published: 2025-12-03 20:16 - Updated: 2026-01-30 18:38
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client
References
security@openvpn.nethttps://community.openvpn.net/Security%20Announcements/CVE-2025-13086Vendor Advisory
security@openvpn.nethttps://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.htmlMailing List, Release Notes
security@openvpn.nethttps://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.htmlMailing List, Release Notes
Impacted products
Vendor Product Version
openvpn openvpn *
openvpn openvpn 2.7
openvpn openvpn 2.7
openvpn openvpn 2.7
openvpn openvpn 2.7
openvpn openvpn 2.7
openvpn openvpn 2.7
openvpn openvpn 2.7
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:*:*:*:*:community:*:*:*",
              "matchCriteriaId": "61429F75-3DE9-499D-B00B-407E476A7B0F",
              "versionEndExcluding": "2.6.16",
              "versionStartIncluding": "2.6.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:alpha1:*:*:community:*:*:*",
              "matchCriteriaId": "474A2F74-9D40-437D-B71A-43A8A26C2A55",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:alpha2:*:*:community:*:*:*",
              "matchCriteriaId": "1F5B810E-3614-4332-9281-B2AA28BD9403",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:alpha3:*:*:community:*:*:*",
              "matchCriteriaId": "2A423301-191A-4578-B824-22024A225C1C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:beta1:*:*:community:*:*:*",
              "matchCriteriaId": "537BC1B1-7E25-48A0-9750-443E6774FD97",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:beta2:*:*:community:*:*:*",
              "matchCriteriaId": "387E2C7F-C16A-49FA-827B-642BA760320D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:beta3:*:*:community:*:*:*",
              "matchCriteriaId": "183C57B8-5F1E-44E8-8B8A-5FBCDB926F21",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:openvpn:openvpn:2.7:rc1:*:*:community:*:*:*",
              "matchCriteriaId": "113A4E81-FF15-4E70-8DE5-E82AA3FB1D79",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper validation of source IP addresses in OpenVPN version 2.6.0 through 2.6.15 and 2.7_alpha1 through 2.7_rc1 allows an attacker to open a session from a different IP address which did not initiate the connection resulting in a denial of service for the originating client"
    }
  ],
  "id": "CVE-2025-13086",
  "lastModified": "2026-01-30T18:38:13.833",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "HIGH",
          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 4.6,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "UNREPORTED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security@openvpn.net",
        "type": "Secondary"
      }
    ]
  },
  "published": "2025-12-03T20:16:24.353",
  "references": [
    {
      "source": "security@openvpn.net",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://community.openvpn.net/Security%20Announcements/CVE-2025-13086"
    },
    {
      "source": "security@openvpn.net",
      "tags": [
        "Mailing List",
        "Release Notes"
      ],
      "url": "https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00151.html"
    },
    {
      "source": "security@openvpn.net",
      "tags": [
        "Mailing List",
        "Release Notes"
      ],
      "url": "https://www.mail-archive.com/openvpn-announce@lists.sourceforge.net/msg00152.html"
    }
  ],
  "sourceIdentifier": "security@openvpn.net",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-940"
        }
      ],
      "source": "security@openvpn.net",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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Detection rules are retrieved from Rulezet.