FKIE_CVE-2025-21589

Vulnerability from fkie_nvd - Published: 2026-01-27 21:15 - Updated: 2026-06-17 08:43
Severity
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Router may allows a network-based attacker to bypass authentication and take administrative control of the device. This issue affects Session Smart Router:  * from 5.6.7 before 5.6.17,  * from 6.0 before 6.0.8 (affected from 6.0.8), * from 6.1 before 6.1.12-lts,  * from 6.2 before 6.2.8-lts,  * from 6.3 before 6.3.3-r2;  This issue affects Session Smart Conductor:  * from 5.6.7 before 5.6.17,  * from 6.0 before 6.0.8 (affected from 6.0.8), * from 6.1 before 6.1.12-lts,  * from 6.2 before 6.2.8-lts,  * from 6.3 before 6.3.3-r2;  This issue affects WAN Assurance Managed Routers:  * from 5.6.7 before 5.6.17,  * from 6.0 before 6.0.8 (affected from 6.0.8), * from 6.1 before 6.1.12-lts,  * from 6.2 before 6.2.8-lts,  * from 6.3 before 6.3.3-r2.
References
sirt@juniper.nethttps://kb.juniper.net/JSA94663
sirt@juniper.nethttps://support.juniper.net/support/eol/software/ssr/
sirt@juniper.nethttps://supportportal.juniper.net/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Session Smart Router",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "5.6.17",
              "status": "affected",
              "version": "5.6.7",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "6.0.8",
                  "status": "affected"
                }
              ],
              "lessThan": "6.0.8",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.12-lts",
              "status": "affected",
              "version": "6.1",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2.8-lts",
              "status": "affected",
              "version": "6.2",
              "versionType": "semver"
            },
            {
              "lessThan": "6.3.3-r2",
              "status": "affected",
              "version": "6.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Session Smart Conductor",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "5.6.17",
              "status": "affected",
              "version": "5.6.7",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "6.0.8",
                  "status": "affected"
                }
              ],
              "lessThan": "6.0.8",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.12-lts",
              "status": "affected",
              "version": "6.1",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2.8-lts",
              "status": "affected",
              "version": "6.2",
              "versionType": "semver"
            },
            {
              "lessThan": "6.3.3-r2",
              "status": "affected",
              "version": "6.3",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "WAN Assurance Managed Router",
          "vendor": "Juniper Networks",
          "versions": [
            {
              "lessThan": "5.6.17",
              "status": "affected",
              "version": "5.6.7",
              "versionType": "semver"
            },
            {
              "changes": [
                {
                  "at": "6.0.8",
                  "status": "affected"
                }
              ],
              "lessThan": "6.0.8",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.12-lts",
              "status": "affected",
              "version": "6.1",
              "versionType": "semver"
            },
            {
              "lessThan": "6.2.8-lts",
              "status": "affected",
              "version": "6.2",
              "versionType": "semver"
            },
            {
              "lessThan": "6.3.3-r2",
              "status": "affected",
              "version": "6.3",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "sirt@juniper.net"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Authentication Bypass Using an\nAlternate Path or Channel vulnerability in Juniper Networks Session Smart\nRouter may allows a network-based attacker to bypass authentication\nand take administrative control of the device.\n\nThis issue affects Session Smart Router:\u00a0\n\n\n\n  *  from 5.6.7 before 5.6.17,\u00a0\n  *  from 6.0 before 6.0.8 (affected from 6.0.8),\n\n  *  from 6.1 before 6.1.12-lts,\u00a0\n  *  from 6.2 before 6.2.8-lts,\u00a0\n  *  from 6.3 before 6.3.3-r2;\u00a0\n\n\n\n\nThis issue affects Session Smart Conductor:\u00a0\n\n\n\n  *  from 5.6.7 before 5.6.17,\u00a0\n  *  from 6.0 before 6.0.8 (affected from 6.0.8),\n\n  *  from 6.1 before 6.1.12-lts,\u00a0\n  *  from 6.2 before 6.2.8-lts,\u00a0\n  *  from 6.3 before 6.3.3-r2;\u00a0\n\n\n\n\nThis issue affects WAN Assurance Managed Routers:\u00a0\n\n\n\n  *  from 5.6.7 before 5.6.17,\u00a0\n  *  from 6.0 before 6.0.8 (affected from 6.0.8),\n\n  *  from 6.1 before 6.1.12-lts,\u00a0\n  *  from 6.2 before 6.2.8-lts,\u00a0\n  *  from 6.3 before 6.3.3-r2."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de omisi\u00f3n de autenticaci\u00f3n usando una ruta o canal alternativo en el router Session Smart de Juniper Networks puede permitir a un atacante basado en la red omitir la autenticaci\u00f3n y tomar el control administrativo del dispositivo.\n\nEste problema afecta al Router Session Smart:\n\n  * desde 5.6.7 antes de 5.6.17,\n  * desde 6.0 antes de 6.0.8 (afectado desde 6.0.8),\n  * desde 6.1 antes de 6.1.12-lts,\n  * desde 6.2 antes de 6.2.8-lts,\n  * desde 6.3 antes de 6.3.3-r2;\n\nEste problema afecta al Conductor Session Smart:\n\n  * desde 5.6.7 antes de 5.6.17,\n  * desde 6.0 antes de 6.0.8 (afectado desde 6.0.8),\n  * desde 6.1 antes de 6.1.12-lts,\n  * desde 6.2 antes de 6.2.8-lts,\n  * desde 6.3 antes de 6.3.3-r2;\n\nEste problema afecta a los Routers Gestionados de WAN Assurance:\n\n  * desde 5.6.7 antes de 5.6.17,\n  * desde 6.0 antes de 6.0.8 (afectado desde 6.0.8),\n  * desde 6.1 antes de 6.1.12-lts,\n  * desde 6.2 antes de 6.2.8-lts,\n  * desde 6.3 antes de 6.3.3-r2."
    }
  ],
  "id": "CVE-2025-21589",
  "lastModified": "2026-06-17T08:43:47.637",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "sirt@juniper.net",
        "type": "Secondary"
      }
    ],
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "sirt@juniper.net",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-21589",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-01-27T21:27:50.309259Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-01-27T21:15:56.040",
  "references": [
    {
      "source": "sirt@juniper.net",
      "url": "https://kb.juniper.net/JSA94663"
    },
    {
      "source": "sirt@juniper.net",
      "url": "https://support.juniper.net/support/eol/software/ssr/"
    },
    {
      "source": "sirt@juniper.net",
      "url": "https://supportportal.juniper.net/"
    }
  ],
  "sourceIdentifier": "sirt@juniper.net",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ],
      "source": "sirt@juniper.net",
      "type": "Secondary"
    }
  ]
}



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