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  4. CVE 2026 103401 session smart router and session smart conductor
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Back to active CVEs
High · CVSS 8.8CVE-2026-103401

Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as rootCVE-2026-103401

Answer in brief

CVE-2026-103401 records a High severity (CVSS 8.8) vulnerability in Session Smart Router and Session Smart Conductor: An attacker can overwrite arbitrary files as root. The current sources do not mark it as known exploited. The current feed maps Juniper Networks/Session Smart Conductor (generic), Juniper Networks/Session Smart Router (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 28, 2026Updated Oct 28, 2026Source checked Oct 28, 2026First seen by HOL Oct 28, 2026Material review Oct 28, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 8.8
Exploitation
Not marked as known exploited
Affected software
2 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Juniper Networks/Session Smart Conductor (generic), Juniper Networks/Session Smart Router (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Juniper Networks/Session Smart Conductorgeneric>=0 <7.0.5 || >=7.1.0 <7.1.7 || >=7.2.0 <7.2.37.0.5, 7.1.7, 7.2.3
Juniper Networks/Session Smart Routergeneric>=0 <7.0.5 || >=7.1.0 <7.1.7 || >=7.2.0 <7.2.37.0.5, 7.1.7, 7.2.3

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Juniper Networks/Session Smart Conductor, Juniper Networks/Session Smart Router.
  2. 2Review the reported fix. Source-reported solution: The following software releases of Session Smart Router and Session Smart Conductor have been updated to resolve these specific issues: * 7.0.5 and all subsequent releases; * 7.1.7 and all subsequent releases; * 7.2.3 and all subsequent releases.

Evidence timeline and material changes

  1. Published upstream

    Oct 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 28, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 28, 2026

Sources and claim methodology

  • Source referencesupportportal.juniper.net
Upstream source 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.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Path Traversal
EPSS
Not reported
CWE IDs
CWE-59
Source
CVE List V5
Source checked
Oct 28, 2026
References
1 linked source
Open source record