CVE-2026-103401

Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root

HIGH
8.8
CVSS Score
Published: October 28, 2026 at 04:34 PM UTC
Updated: October 28, 2026 at 05:17 PM UTC
2 products affected across 1 vendorSession Smart RouterSession Smart Conductor

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Severity
HIGH8.8
Exploit prediction
EPSS 0.3%

Description

An Improper Link Resolution Before File Access ('Link Following') vulnerability in the unauthenticated web server handlers in Juniper Networks Session Smart Router and Session Smart Conductor allows a local unprivileged user to overwrite arbitrary files as root via unauthenticated API endpoints. This vulnerability can be exploited on Mist-managed routers and on unmanaged Routers that have not yet been onboarded to a Conductor. Routers already managed by Conductor are not affected.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Vendor Advisory
Source: cverecord
https://supportportal.juniper.net/JSA112183

CVSS

8.8HIGHjuniper
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-59

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