CVE-2026-94584: A race condition and thread-safety vulnerability exists in the web management daemon of Brocade Fabric OS vers

Q: How do I fix CVE-2026-94584?

fabric operating system: upgrade to 10.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-94584 being exploited?

CVE-2026-94584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-94584 affect?

CVE-2026-94584 affects fabric operating system. Severity is low (CVSS 2.6). A race condition and thread-safety vulnerability exists in the web management daemon of Brocade Fabric OS versions before 10.0.1. When handling user authentication requests across a multi-threaded execution pool, this race condition causes

Q: How urgent is CVE-2026-94584?

Priority 10/100. No elevated risk signals yet.

Routine

LOW 2.6UPGRADE

CVE-2026-94584 is a low-severity flaw (CVSS 2.6) affecting fabric operating system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A race condition and thread-safety vulnerability exists in the web management daemon of Brocade Fabric OS versions before 10.0.1. When handling user authentication requests across a multi-threaded execution pool, this race condition causes PAM modules to process stale or incorrect client IP addresses and switch context numbers. This leads to inaccurate audit records and potential access control bypasses where AAA evaluation or Calling-Station-ID

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	2.6 (Low)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 97%)
CISA exploited list	No
Weakness	CWE-362
Published	2026-10-08
Last modified	2026-10-14

Publisher (CNA): Brocade Communications Systems, LLC · Vendor: broadcom

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-08 04:18 UTCPublished CVE record published
2026-10-14 19:15 UTCUpdated Record last modified

broadcom fabric operating system UPGRADE

Affected: < 10.0.1

Fixed in: 10.0.1

Safe to downgrade to: no unaffected older release

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-94584?

fabric operating system: upgrade to 10.0.1. Exact commands for each OS are on this page.

Is CVE-2026-94584 being exploited?

CVE-2026-94584 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-94584 affect?

CVE-2026-94584 affects fabric operating system. Severity is low (CVSS 2.6). A race condition and thread-safety vulnerability exists in the web management daemon of Brocade Fabric OS versions before 10.0.1. When handling user authentication requests across a multi-threaded execution pool, this race condition causes

How urgent is CVE-2026-94584?

Priority 10/100. No elevated risk signals yet.

Related CVEs

CVE-2026-94587 MEDIUM 4.5 UPGRADE A buffer overflow vulnerability exists in the WebTools administrative interface handling configuration downloa
CVE-2026-94586 MEDIUM 6.8 UPGRADE A command injection vulnerability exists in the WebTools administrative interface handling configuration downl
CVE-2026-94585 HIGH 8.8 UPGRADE An authentication bypass vulnerability exists in the web management interface of Brocade Fabric OS versions be
CVE-2026-94581 MEDIUM 6.8 UPGRADE An OS command injection vulnerability exists in the REST API management interface of Brocade Fabric OS version
CVE-2026-94579 HIGH 8.0 UPGRADE An OS command injection vulnerability exists in the PAM (Pluggable Authentication Module) session cleanup rout

References

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