CVE-2026-103401: Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root
Juniper Networks · Session Smart Router
Vendor fix available · Affected: Juniper Networks Session Smart Router · Exploitation: not established
ExploitationNot established
Not in CISA KEV as of catalogue 2026.11.13 (13 Nov)
- In CISA KEV: not seen
- Exploited (reported): not seen
- Scanning observed: not seen
- Proof of concept public: not seen
- Not establishedNothing in the sources we check
Higher than 28% of scored CVEs
Not scored yet. NVD has not published a CVSS score.
DescriptionNVD
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.
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- Juniper Networks
- Published
- October 2026
Coverage1 article · 1 outlet
First in our coverage: The Hacker News, 2 Nov.
- FBI blames North Korean TraderTraitor for $6.43 billion heistThe Hacker News · first in our coverage · mentions it in passing
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