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.
Metrics
Affected Vendors & Products
References
| Link | Providers |
|---|---|
| https://supportportal.juniper.net/JSA112183 |
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History
Wed, 28 Oct 2026 22:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Juniper
Juniper session Smart Conductor Juniper session Smart Router |
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| Vendors & Products |
Juniper
Juniper session Smart Conductor Juniper session Smart Router |
Wed, 28 Oct 2026 16:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root | |
| Weaknesses | CWE-59 | |
| References |
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| Metrics |
cvssV3_1
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Status: PUBLISHED
Assigner: juniper
Published: 2026-10-28T16:34:44.566Z
Updated: 2026-10-28T16:34:44.566Z
Reserved: 2026-09-30T14:33:03.168Z
Link: CVE-2026-103401
No data.
Status : Awaiting Analysis
Published: 2026-10-28T17:17:24.070
Modified: 2026-10-28T17:17:24.337
Link: CVE-2026-103401
No data.
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