CVE-2025-21589
Unknown Unknown - Not Provided

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Vulnerability report for CVE-2025-21589, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-01-27

Last updated on: 2026-01-27

Assigner: Juniper Networks, Inc.

Description

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published
2026-01-27
Last Modified
2026-01-27
Generated
2026-07-06
EPSS Evaluated
2026-07-05
NVD
EUVD

Affected Vendors & Products

Showing 15 associated CPEs
Vendor Product Version / Range
juniper_networks session_smart_router From 5.6.7 (inc) to 5.6.17 (exc)
juniper_networks session_smart_router From 6.0 (inc) to 6.0.8 (exc)
juniper_networks session_smart_router From 6.1 (inc) to 6.1.12-lts (exc)
juniper_networks session_smart_router From 6.2 (inc) to 6.2.8-lts (exc)
juniper_networks session_smart_router From 6.3 (inc) to 6.3.3-r2 (exc)
juniper_networks session_smart_conductor From 5.6.7 (inc) to 5.6.17 (exc)
juniper_networks session_smart_conductor From 6.0 (inc) to 6.0.8 (exc)
juniper_networks session_smart_conductor From 6.1 (inc) to 6.1.12-lts (exc)
juniper_networks session_smart_conductor From 6.2 (inc) to 6.2.8-lts (exc)
juniper_networks session_smart_conductor From 6.3 (inc) to 6.3.3-r2 (exc)
juniper_networks wan_assurance_managed_routers From 5.6.7 (inc) to 5.6.17 (exc)
juniper_networks wan_assurance_managed_routers From 6.0 (inc) to 6.0.8 (exc)
juniper_networks wan_assurance_managed_routers From 6.1 (inc) to 6.1.12-lts (exc)
juniper_networks wan_assurance_managed_routers From 6.2 (inc) to 6.2.8-lts (exc)
juniper_networks wan_assurance_managed_routers From 6.3 (inc) to 6.3.3-r2 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-288 The product requires authentication, but the product has an alternate path or channel that does not require authentication.

Attack-Flow Graph

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EPSS Chart