High 7.1Published Oct 8, 2026

CVE-2026-87663An 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.

Updated under an hour ago (2026-10-19 09:00 UTC)

Does this affect you?

It affects Brocade Fabric OS and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.67%, higher than 51% of scored CVEs.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for Brocade Fabric OS

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-290
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.67% (percentile 51)
Assigned by: brocade
NVD analysis: Analyzed
Record last updated: Oct 9, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Brocade Fabric OS brocade:fabric_os (from the name)	before 9.2.2d; from 10.0.0 through 10.0.0a1	CNA record
broadcom fabric_operating_system broadcom:fabric_operating_system	before 9.2.2d; from 10.0.0 before 10.0.1	NVD

References

https://support.broadcom.com/external/content/SecurityAdvisories/0/39163vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.