Riskcovery

CVE-2026-103401

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

State
Published
Severity
8.8 High
Published
Oct 28, 2026
Updated
Oct 28, 2026
Reserved
Sep 30, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.18.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hjuniper

Weaknesses

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

Affected Products

ProductVersions
Session Smart RouterJuniper Networks
  • before 7.0.5Affected
  • 7.1.0 to before 7.1.7Affected
  • 7.2.0 to before 7.2.3Affected
Session Smart ConductorJuniper Networks
  • before 7.0.5Affected
  • 7.1.0 to before 7.1.7Affected
  • 7.2.0 to before 7.2.3Affected

References

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