FKIE_CVE-2025-21589
Vulnerability from fkie_nvd - Published: 2026-01-27 21:15 - Updated: 2026-01-27 21:15
Severity ?
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
Impacted products
| Vendor | Product | Version |
|---|
{
"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."
}
],
"id": "CVE-2025-21589",
"lastModified": "2026-01-27T21:15:56.040",
"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": "Primary"
}
],
"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"
}
]
},
"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": "Received",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-288"
}
],
"source": "sirt@juniper.net",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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