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    CVE-2026-87686

    An authentication and access control bypass vulnerability exists in the web server management interface of Brocade Fabric OS versions before 10.0.1. The web dispatcher routine evaluates internal management VLAN trust decisions using the client-supplied HTTP host header instead of the actual socket transport layer source IP address. Successful exploitation allows the attacker to bypass IP-filtering access control lists (ACLs) and obtain sensitive device metadata (such as model, serial number, hardware revision, and firmware version) without authentication.

    Published:Oct 8, 2026
    Last Modified:Oct 14, 2026
    EPS:Oct 8, 2026
    EPSS Score:0.00201
    CVSS Score:4.3

    Affected Products

    Vendor
    Broadcom
    Product
    Fabric Operating System
    Vendor
    Brocade
    Product
    Fabric Os

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-87677 (CVSS 5.4) — An OS command injection vulnerability exists in the account management subsystem of Brocade Fabric OS versions…
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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