CVE Feed

    Dashboard / CVE / CVE-2026-103401

    CVE-2026-103401

    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.

    Published:Oct 28, 2026
    Last Modified:Oct 28, 2026
    EPS:Oct 28, 2026
    EPSS Score:
    CVSS Score:8.8

    Affected Products

    Vendor
    Juniper
    Product
    Session Smart Conductor
    Vendor
    Juniper
    Product
    Session Smart Router

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-106079 (CVSS 8.8) — An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in…
    CVE-2026-103407 (CVSS 8.8) — An Improper Limitation of a Pathname to a Restricted Directory vulnerability in ConfigDirector in Juniper Netw…
    CVE-2026-103406 (CVSS 9.8) — An Improper Neutralization of Special Elements used in an OS Command vulnerability in the AutomatedProvisioner…
    CVE-2026-103405 (CVSS 5.8) — An Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerab…
    CVE-2026-103404 (CVSS 6.8) — An Incorrect Permission Assignment for Critical Resource vulnerability in RoutingManager in Juniper Networks S…
    CVE-2026-103403 (CVSS 8.8) — An Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in…
    CVE-2026-103402 (CVSS 8.8) — An Insufficient Verification of Data Authenticity vulnerability in PCLI in Juniper Networks Session Smart Rout…
    CVE-2026-103400 (CVSS 5.5) — An Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerab…
    CVE-2026-103390 (CVSS 5.3) — An Out-of-Bounds Read vulnerability in the HttpParser component in Juniper Networks Session Smart Router and S…
    CVE-2025-21589 (CVSS 9.3) — An Authentication Bypass Using an Alternate Path or Channel vulnerability in Juniper Networks Session Smart Ro…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High