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CVE-2026-103401high8.8

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

Impact

A local unprivileged user can overwrite arbitrary files as root in Juniper Networks Session Smart Router and Session Smart Conductor versions less than 7.0.5, 7.1.7, and 7.2.3 via unauthenticated API endpoints. This vulnerability affects unmanaged routers and those not yet onboarded to a Conductor. Routers already managed by Conductor are not affected.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

What to do

The following software releases of Session Smart Router and Session Smart Conductor have been updated to resolve these specific issues:

  • 7.0.5

and all subsequent releases;

  • 7.1.7

and all subsequent releases;

  • 7.2.3 and all subsequent releases.
juniper guidance

There are no known workarounds for this issue.

juniper guidance

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Juniper Networks · juniper

Session Smart Router

3 ranges
juniper version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 7.0.5

custom versions

7.1.0 → before 7.1.7

custom versions

7.2.0 → before 7.2.3

custom versions

unaffected

unknown

Other versions: unaffected

Juniper Networks · juniper

Session Smart Conductor

3 ranges
juniper version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

0 → before 7.0.5

custom versions

7.1.0 → before 7.1.7

custom versions

7.2.0 → before 7.2.3

custom versions

unaffected

unknown

Other versions: unaffected

Original source 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.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance
Weakness classification
Additional publishers · not supplied

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-103401

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-59 ↗

CWE-59 Improper Link Resolution Before File Access ('Link Following')

juniper

Related →
Contributing organizations · 1
juniper

Assigning organization

2026-10-28

What changed

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Large field values are marked as truncated previews. Original source snapshots remain retained.

References

1 sources
supportportal.juniper.net/JSA112183
vendor-advisoryjuniper