CVE-2026-87664: A session context forgery vulnerability exists in the web management daemon of Brocade Fabric OS versions 9.2.

Q: How do I fix CVE-2026-87664?

fabric operating system: upgrade to 9.2.2d, 10.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-87664 being exploited?

CVE-2026-87664 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-2026-87664 affect?

CVE-2026-87664 affects fabric operating system. Severity is high (CVSS 7.8). A session context forgery vulnerability exists in the web management daemon of Brocade Fabric OS versions 9.2.2d and 10.0.0 through 10.0.0a1. When processing local inter-process communication (IPC) storage callbacks, the service accepts and

Routine

HIGH 7.8UPGRADE

CVE-2026-87664 is a high-severity flaw (CVSS 7.8) affecting fabric operating system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A session context forgery vulnerability exists in the web management daemon of Brocade Fabric OS versions 9.2.2d and 10.0.0 through 10.0.0a1. When processing local inter-process communication (IPC) storage callbacks, the service accepts and registers session structures including administrative role permissions, user identifiers, and authorization flags—without verifying the identity or authenticity of the sending process. An attacker can obtain e

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	7.8 (High)
Attack vector	Local
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.1% (top 98%)
CISA exploited list	No
Weakness	CWE-306
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 05:17 UTCPublished CVE record published
2026-10-14 19:33 UTCUpdated Record last modified

broadcom fabric operating system UPGRADE

Affected: < 9.2.2d · >= 10.0.0 and < 10.0.1

Fixed in: 9.2.2d, 10.0.1

Safe to downgrade to: a release before 10.0.0

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-2026-87664?

fabric operating system: upgrade to 9.2.2d, 10.0.1. Exact commands for each OS are on this page.

Is CVE-2026-87664 being exploited?

CVE-2026-87664 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-2026-87664 affect?

CVE-2026-87664 affects fabric operating system. Severity is high (CVSS 7.8). A session context forgery vulnerability exists in the web management daemon of Brocade Fabric OS versions 9.2.2d and 10.0.0 through 10.0.0a1. When processing local inter-process communication (IPC) storage callbacks, the service accepts and

How urgent is CVE-2026-87664?

Priority 28/100. High severity

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

← Back to latest CVEs