CVE-2026-103401
Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root
HIGH 8.8
At a glance
- Source
- CVE.org
- State
- PUBLISHED
- Published
- Updated
- Assigner
- juniper
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.
Weaknesses (CWE)
- CWE-59 — Improper Link Resolution Before File Access
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | juniper |
European references
- ENISA EUVD · EUVD-2026-112220
- GCVE · GCVE-0-2026-103401
CERT-FR advisories
- CERTFR-2026-AVI-1414 — Multiples vulnérabilités dans les produits Juniper Networks · cert.ssi.gouv.fr
Affected products
| Product | Versions |
|---|---|
| Juniper Networks · Session Smart Router | affected 0 < 7.0.5 ; affected 7.1.0 < 7.1.7 ; affected 7.2.0 < 7.2.3 |
| Juniper Networks · Session Smart Conductor | affected 0 < 7.0.5 ; affected 7.1.0 < 7.1.7 ; affected 7.2.0 < 7.2.3 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |