CVE-2026-103401
Reported by juniper · Published October 28, 2026
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.
EPSS 0.34% · 28.1th percentile
Fixed versions
Upgrade to a fixed version or later. Language registries are listed first, then Linux distributions, then vendor products.
| Package | Ecosystem | Fixed in |
|---|---|---|
| Session Smart Conductor | Juniper Networks | 7.2.3, 7.1.7, 7.0.5 |
| Session Smart Router | Juniper Networks | 7.2.3, 7.1.7, 7.0.5 |
Risk scores
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Session Smart Router | 0, 7.1.0, 7.2.0 |
| Juniper Networks | Session Smart Conductor | 0, 7.1.0, 7.2.0 |
| Juniper Networks | Session Smart Conductor | 0, 7.1.0, 7.2.0 |
| Juniper Networks | Session Smart Router | 0, 7.1.0, 7.2.0 |
Timeline
- Oct 28, 2026 CVE Published
- Oct 29, 2026 EPSS Score (2 in total, the first dated here)
- Oct 29, 2026 Coalition ESS Score
Query this with the API
The same record, from the CLI:
vulnetix vdb vuln CVE-2026-103401
vulnetix vdb fixes CVE-2026-103401Or with curl, using the org id and key from your account page:
curl -s -H "Authorization: ApiKey ${VULNETIX_ORG_ID}:${VULNETIX_API_KEY}" \
"https://api.vdb.vulnetix.com/v2/vuln/CVE-2026-103401/fixes/registry"The Community plan is free and allows 50 queries a day. Get a free API key · API quickstart