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CVE-2026-33778 Junos OS: SRX Series, MX Series: When a specifically malformed first ISAKMP packet is received kmd/iked crashes

🗓️ 09 Apr 2026 21:35:10Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 17 Views

Unauthenticated attacker causes kmd/iked crash with malformed first IPsec packet, denying VPN SAs.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "SRX Series",
      "MX Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "22.4R3-S9",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "23.2R2-S6",
        "status": "affected",
        "version": "23.2",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R2-S7",
        "status": "affected",
        "version": "23.4",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2-S4",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThan": "24.4R2-S3",
        "status": "affected",
        "version": "24.4",
        "versionType": "semver"
      },
      {
        "lessThan": "25.2R1-S2, 25.2R2",
        "status": "affected",
        "version": "25.2",
        "versionType": "semver"
      }
    ]
  }
]

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09 Apr 2026 21:35Current
CVSS 3.17.5
CVSS 48.7
EPSS0.00148
17