CVE-2026-87663CWE-290

CVE-2026-87663

Medium · published October 8, 2026

CVSS v3.1
6.7
EPSS
1%
Percentile
51.2
In the wild
Unconfirmed
What it is

An authentication bypass and command injection vulnerability exists in the inter-switch remote execution service of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When processing remote command execution IPC frames across the fabric, the receiving switch processes these commands at an elevated processing level without proper verification of transmitted parameters. This allows an attacker on a single fabric-connected switch to escalate privileges and execute arbitrary root commands locally or across other managed fabric members where remote execution functionality is enabled.

The record
Technical detail
CVSS v3.1
6.7 · MEDIUM
Vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00666 · 51.2th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2026-10-08T09:17Z
Affected products (2)
ProductVersionsFixed in
broadcom/fabric_operating_system< 9.2.2d9.2.2d
broadcom/fabric_operating_system≥ 10.0.0, < 10.0.110.0.1
References (1)
EPSS history
Timeline
  • 09 OCT 03:32Z
    EPSS moved — → 1%
    epss
  • 08 OCT 04:11Z
    An authentication bypass and command injection vulnerability exists in the inter-switch remote execution service of Brocade Fabric OS versions before 9.2.2d…
    cvelistv5
  • 08 OCT 04:11Z
    An authentication bypass and command injection vulnerability exists in the inter-switch remote execution service of Brocade Fabric OS versions before 9.2.2d…
    cvelistv5