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CVE-2026-57025 Junos OS and Junos OS Evolved: EX Series, QFX Series, MX Series: A specific 'show l2-learning/ethernet-switching' command causes l2ald crash

🗓️ 09 Jul 2026 21:07:20Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 37 Views

CVE-2026-57025: Junos OS and Junos OS Evolved l2ald crash from show l2-learning causing denial of service.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "EX Series",
      "QFX Series",
      "MX 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",
        "status": "affected",
        "version": "24.2",
        "versionType": "custom"
      },
      {
        "lessThan": "24.4R1-S2",
        "status": "affected",
        "version": "24.4",
        "versionType": "custom"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "23.2R2-S7-EVO",
        "status": "affected",
        "version": "0",
        "versionType": "custom"
      },
      {
        "lessThan": "23.4R2-S8-EVO",
        "status": "affected",
        "version": "23.4",
        "versionType": "custom"
      },
      {
        "lessThan": "24.2R2-EVO",
        "status": "affected",
        "version": "24.2",
        "versionType": "custom"
      },
      {
        "lessThan": "24.4R1-S3-EVO",
        "status": "affected",
        "version": "24.4",
        "versionType": "custom"
      }
    ]
  }
]

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