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CVE-2025-59960 Junos OS and Junos OS Evolved: DHCP Option 82 messages from clients being passed unmodified to the DHCP server

🗓️ 15 Jan 2026 20:14:00Reported by juniperType 
cvelist
 cvelist
🔗 www.cve.org👁 28 Views

Junos DHCP relay may forward Option eighty-two unmodified, exhausting address pools and causing denial of service.

Related
Affected
Refs
[
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "21.2R3-S10",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "21.4R3-S12",
        "status": "affected",
        "version": "21.4",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2*",
        "status": "affected",
        "version": "22.2",
        "versionType": "semver"
      },
      {
        "lessThan": "22.4R3-S8",
        "status": "affected",
        "version": "22.4",
        "versionType": "semver"
      },
      {
        "lessThan": "23.2R2-S5",
        "status": "affected",
        "version": "23.2",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R2-S6",
        "status": "affected",
        "version": "23.4",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2-S2",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThan": "24.4R2",
        "status": "affected",
        "version": "24.4",
        "versionType": "semver"
      },
      {
        "lessThan": "25.2R1-S1, 25.2R2",
        "status": "affected",
        "version": "25.2",
        "versionType": "semver"
      }
    ]
  },
  {
    "defaultStatus": "unaffected",
    "product": "Junos OS Evolved",
    "vendor": "Juniper Networks",
    "versions": [
      {
        "lessThan": "21.4R3-S12-EVO",
        "status": "affected",
        "version": "0",
        "versionType": "semver"
      },
      {
        "lessThan": "22.2*",
        "status": "affected",
        "version": "22.2",
        "versionType": "semver"
      },
      {
        "lessThan": "22.4R3-S8-EVO",
        "status": "affected",
        "version": "22.4",
        "versionType": "semver"
      },
      {
        "lessThan": "23.2R2-S5-EVO",
        "status": "affected",
        "version": "23.2",
        "versionType": "semver"
      },
      {
        "lessThan": "23.4R2-S6-EVO",
        "status": "affected",
        "version": "23.4",
        "versionType": "semver"
      },
      {
        "lessThan": "24.2R2-S2-EVO",
        "status": "affected",
        "version": "24.2",
        "versionType": "semver"
      },
      {
        "lessThan": "24.4R2-EVO",
        "status": "affected",
        "version": "24.4",
        "versionType": "semver"
      },
      {
        "lessThan": "25.2R1-S1-EVO, 25.2R2-EVO",
        "status": "affected",
        "version": "25.2",
        "versionType": "semver"
      }
    ]
  }
]

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