CVE-2026-87686: medium-severity vulnerability in Brocade Fabric OS
Published
10Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3
exploitation probability
—
observed exploitation
nono source reports it
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.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Brocade · Fabric OSRelated CVEs — Brocade Fabric OS
In the same product, most dangerous first.
CVE-2025-1976HIGHCode injection exposure in Fabric OS 9.1.0 through 9.1.1d6EPSS 0.7%KEVCVE-2023-3454HIGHCVE-2023-3454EPSS 1.2%CVE-2024-10403MEDIUMSFTP/FTP password could be captured in plain text in Supportsave generated from SANnavEPSS 0.7%CVE-2025-58382HIGHPrivilege escalation in Brocade Fabric before 9.2.1c2 and 9.2.2 through 9.2.2aEPSS 0.6%CVE-2023-31927MEDIUMAn information disclosure in the web interface of Brocade Fabric OSEPSS 0.6%CVE-2024-7517HIGHPrivileged escalation via crafted use of portcfg commandEPSS 0.6%