{
  "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-2026-57021",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-57021",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-09T21:05:45.214Z",
    "updatedAt": "2026-07-10T14:28:45.161Z",
    "importedAt": "2026-10-24T01:58:20.586Z",
    "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: SRX Series: If VPN compliance-check is configured an attacker can cause http-gk process crash",
      "summary": "An Out-of-bounds Write vulnerability in the http-gatekeeper (http-gk) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\nIf an SRX Series device is configured for remote-access VPN with pre-logon compliance check, a network-based attacker sending specifically formatted requests can trigger an out of bounds write leading to an http-gk process crash. This crash leads to unavailability of all services depending on the [ system services web-management ] configuration (like J-Web, remote access VPN and firewall authentication) until the process automatically restarts.\n\nThis issue affects Junos OS on SRX Series:\n\n\n  *  23.2 versions before 23.2R2-S7,\n  *  23.4 versions before 23.4R2-S8,\n  *  24.2 versions before 24.2R2-S4,\n  *  24.4 versions before 24.4R2-S4,\n  *  25.2 versions before 25.2R2,\n  *  25.4 versions before 25.4R1-S1, 25.4R2.",
      "affected": [
        {
          "vendor": "Juniper Networks",
          "product": "Junos OS",
          "platforms": [
            "SRX Series"
          ],
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "23.2",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "23.2R2-S7"
            },
            {
              "version": "23.4",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "23.4R2-S8"
            },
            {
              "version": "24.2",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "24.2R2-S4"
            },
            {
              "version": "24.4",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "24.4R2-S4"
            },
            {
              "version": "25.2",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25.2R2"
            },
            {
              "version": "25.4",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "25.4R1-S1, 25.4R2"
            }
          ]
        }
      ]
    }
  }
}