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CVE-2026-87663

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 processin

Brocade Fabric OS
CVSS
7.1High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.67%Chance of exploitation activity in the next 30 days, higher than 51% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in9.2.2dFixed versionCVE List
Published8 Oct 2026Updated 9 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

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.

Text from CVE List

Affected versions 2

  • Fabric OSaffected: all versions before 9.2.2dCVE List
  • Fabric OSaffected: 10.0.0 through 10.0.0a1CVE List

References 1