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CVE-2025-21589

CRITICAL
9.8
CVSS 3.1
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.

Metadata

CVE ID
CVE-2025-21589
State
PUBLISHED
Assigner
juniper
Reserved
2024-12-26 14:47 UTC
Published
2026-01-27 20:32 UTC
Last updated
2026-01-27 21:28 UTC
Primary CWE
CWE-288
CWE-288 Authentication Bypass Using an Alternate Path or Cha…
Vendor / Product
Juniper Networks / Session Smart Router
Sources
cve.org  ·  NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
total
Affected products (3)
VendorProductPlatformVersions
Juniper Networks Session Smart Conductor 5.6.7 < 5.6.17, 6.0 < 6.0.8, 6.1 < 6.1.12-lts, 6.2 < 6.2.8-lts …
Juniper Networks Session Smart Router 5.6.7 < 5.6.17, 6.0 < 6.0.8, 6.1 < 6.1.12-lts, 6.2 < 6.2.8-lts …
Juniper Networks WAN Assurance Managed Router 5.6.7 < 5.6.17, 6.0 < 6.0.8, 6.1 < 6.1.12-lts, 6.2 < 6.2.8-lts …
Weakness (CWE)
CWESourceDescription
CWE-288 cna CWE-288 Authentication Bypass Using an Alternate Path or Channel
CVSS scores (2)
ScoreSeverityVersionSourceVector
9.8 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3 CRITICAL 4.0 cna 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
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