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CVE-2025-59957 Junos OS: EX4600 Series and QFX5000 Series: An attacker with physical access can open a persistent backdoor

🗓️ 09 Oct 2025 15:43:23Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 8 Views

Physical attacker can insert a persistent backdoor via a defaults file on Junos operating system EX4600 and QFX5000.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "platforms": [
      "EX4600",
      "QFX5000"
    ],
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "21.4R3",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2R3-S3",
        "status": "affected",
        "version": "22.2",
        "versionType": "semver"
      }
    ]
  }
]

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