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    CVE-2026-103393

    An Out-of-Bounds Read vulnerability in the VRRP implementation in Juniper Networks Session Smart Router allows an L2-adjacent attacker to read stale memory contents or cause a system fault via a specially crafted VRRPv3 advertisement.

    Published:Oct 28, 2026
    Last Modified:Nov 5, 2026
    EPS:Oct 28, 2026
    EPSS Score:0.00154
    CVSS Score:4.3

    Affected Products

    Vendor
    Juniper
    Product
    Session Smart Router

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

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    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
    CVE-2026-103393 — Juniper (Medium 4.3) | CVE-DB