All vulnerabilities
CVE-2026-87666

An OS command injection vulnerability exists in the time and zone management subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When updating system timezone settings v

Brocade Fabric OS
CVSS
8.6High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)2.57%Chance of exploitation activity in the next 30 days, higher than 85% 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 OS command injection vulnerability exists in the time and zone management subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When updating system timezone settings via the REST API or configuration download routines, the system fails to sanitize input values before processing them in underlying shell execution routines. An authenticated user with low-privilege administrative access can exploit this vulnerability by submitting a crafted timezone string containing shell metacharacters. Successful exploitation allows the attacker to escape the restricted management environment and execute arbitrary shell commands with elevated privileges.

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