CVE-2024-2973: Session Smart Router(SSR): On redundant router deployments API authentication can be bypassed

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-06-27 · updated 2026-06-17
Weakness: CWE-288

Description

An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Router or conductor running with a redundant peer allows a network based attacker to bypass authentication and take full control of the device. Only routers or conductors that are running in high-availability redundant configurations are affected by this vulnerability. No other Juniper Networks products or platforms are affected by this issue. This issue affects: Session Smart Router: * All versions before 5.6.15, * from 6.0 before 6.1.9-lts, * from 6.2 before 6.2.5-sts. Session Smart Conductor: * All versions before 5.6.15, * from 6.0 before 6.1.9-lts, * from 6.2 before 6.2.5-sts. WAN Assurance Router: * 6.0 versions before 6.1.9-lts, * 6.2 versions before 6.2.5-sts.

Affected products

Juniper Networks Session Smart Conductor: before 5.6.15; from 6.0 before 6.1.9-lts; from 6.2 before 6.2.5-sts — fixed in 5.6.15, 6.1.9-lts, 6.2.5-sts
Juniper Networks Session Smart Router: before 5.6.15; from 6.0 before 6.1.9-lts; from 6.2 before 6.2.5-sts — fixed in 5.6.15, 6.1.9-lts, 6.2.5-sts
Juniper Networks WAN Assurance Router: from 6.0 before 6.1.9-lts; from 6.2 before 6.2.5-sts — fixed in 6.1.9-lts, 6.2.5-sts

How to fix

Upgrade to a fixed version: Juniper Networks Session Smart Conductor 5.6.15, 6.1.9-lts, 6.2.5-sts; Juniper Networks Session Smart Router 5.6.15, 6.1.9-lts, 6.2.5-sts; Juniper Networks WAN Assurance Router 6.1.9-lts, 6.2.5-sts. Check the vendor advisory for mitigations.

References

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