{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2025-52951",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-52951",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-07-11T14:41:03.752Z",
    "updatedAt": "2025-07-15T14:35:11.059Z",
    "importedAt": "2026-10-24T01:57:39.058Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Junos OS: IPv6 firewall filter fails to match payload-protocol",
      "summary": "A Protection Mechanism Failure vulnerability in kernel filter processing of Juniper Networks Junos OS allows an attacker sending IPv6 traffic destined to the device to effectively bypass any firewall filtering configured on the interface.\n\nDue to an issue with Junos OS kernel filter processing, the 'payload-protocol' match is not being supported, causing any term containing it to accept all packets without taking any other action. In essence, these firewall filter terms were being processed as an 'accept' for all traffic on the interface destined for the control plane, even when used in combination with other match criteria.\n\nThis issue only affects firewall filters protecting the device's control plane. Transit firewall filtering is unaffected by this vulnerability.\n\nThis issue affects Junos OS: \n\n\n\n  *  all versions before 21.2R3-S9, \n  *  from 21.4 before 21.4R3-S11, \n  *  from 22.2 before 22.2R3-S7, \n  *  from 22.4 before 22.4R3-S7, \n  *  from 23.2 before 23.2R2-S4, \n  *  from 23.4 before 23.4R2-S5, \n  *  from 24.2 before 24.2R2-S1, \n  *  from 24.4 before 24.4R1-S2, 24.4R2.\n\n\n\nThis is a more complete fix for previously published CVE-2024-21607 (JSA75748).",
      "affected": [
        {
          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "0",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.2R3-S9"
            },
            {
              "version": "21.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "21.4R3-S11"
            },
            {
              "version": "22.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.2R3-S7"
            },
            {
              "version": "22.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "22.4R3-S7"
            },
            {
              "version": "23.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "23.2R2-S4"
            },
            {
              "version": "23.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "23.4R2-S5"
            },
            {
              "version": "24.2",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "24.2R2-S1"
            },
            {
              "version": "24.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "24.4R1-S2, 24.4R2"
            }
          ]
        }
      ]
    }
  }
}