CVE-2026-87661: Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1 directly accepts Apache configuration fil

Q: How do I fix CVE-2026-87661?

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

Q: Is CVE-2026-87661 being exploited?

CVE-2026-87661 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-2026-87661 affect?

CVE-2026-87661 affects fabric operating system. Severity is medium (CVSS 5.7). Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1 directly accepts Apache configuration file data during service setup or re-initialization. An attacker capable of corrupting the configuration structure will prevent the w

Q: How urgent is CVE-2026-87661?

Priority 27/100. On your watchlist

Routine

MEDIUM 5.7WATCHLISTUPGRADE

CVE-2026-87661 is a medium-severity flaw (CVSS 5.7) affecting fabric operating system. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1 directly accepts Apache configuration file data during service setup or re-initialization. An attacker capable of corrupting the configuration structure will prevent the web management service from starting or recovering during service bring-up, leading to a persistent Denial of Service (DoS) of the administrative web interface.

Why this priority

On your watchlist

A fixed release or distro patch exists.

Risk facts

CVSS score	5.7 (Medium)
Attack vector	Adjacent network
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 91%)
CISA exploited list	No
Weakness	CWE-93
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 19:31 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-2026-87661?

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

Is CVE-2026-87661 being exploited?

CVE-2026-87661 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-2026-87661 affect?

CVE-2026-87661 affects fabric operating system. Severity is medium (CVSS 5.7). Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1 directly accepts Apache configuration file data during service setup or re-initialization. An attacker capable of corrupting the configuration structure will prevent the w

How urgent is CVE-2026-87661?

Priority 27/100. On your watchlist

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CVE-2026-94581 MEDIUM 6.8 UPGRADE An OS command injection vulnerability exists in the REST API management interface of Brocade Fabric OS version
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References

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