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CVE-2026-57027 Junos OS: EX4100 Series, EX4400: With sFlow configured in a VC scenario multicast traffic leads to an FPC crash

🗓️ 09 Jul 2026 21:08:07Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 49 Views

CVE-2026-57027: sFlow in Virtual Chassis on EX4100/EX4400 causes memory leak and FPC crash DoS.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "EX4100 Series",
      "EX4400 Series"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S7",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S7",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "24.2R2-S4",
        "status": "affected",
        "version": "24.2",
        "versionType": "custom"
      },
      {
        "lessThan": "24.4R2",
        "status": "affected",
        "version": "24.4",
        "versionType": "custom"
      }
    ]
  }
]

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09 Jul 2026 21:08Current
CVSS 3.16.5
CVSS 47.1
EPSS0.00269
SSVC
49