Critical 9.8Published Oct 28, 2026

CVE-2026-103409Session Smart Router: An attacker obtains administrative privileges when an unauthenticated internal endpoint is accessed

Updated under an hour ago (Oct 30, 2026, 4:50 AM ET)

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It affects Juniper Networks Session Smart Router. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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A Missing authentication for critical function vulnerability in Juniper Networks Session Smart Router allows an unauthenticated network-based attacker to obtain administrative privileges by passing crafted URL parameters to an insecure endpoint running as root. Note that this vulnerability can only be exploited prior to the device being onboarded to Mist/Conductor. The issue can no longer be exploited once a device is onboarded to Mist/Conductor.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-306
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: juniper
NVD analysis: Awaiting Analysis
Record last updated: Oct 28, 2026
First seen by InfoSec Signals: Oct 28, 2026

Affected products

Affected products

Juniper Networks Session Smart Router juniper_networks:session_smart_router (from the name)	before 7.0.5; from 7.1.0 before 7.1.7; from 7.2.0 before 7.2.3	CNA record

References

References

https://supportportal.juniper.net/JSA112183	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.