CVE-2026-87428: In Brocade ASCG before 3.5.0, a local unauthorized user on the ASCG VM who can issue a request to the SANnav

Q: How do I fix CVE-2026-87428?

brocade active support connectivity gateway: upgrade to 3.5.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-87428 being exploited?

CVE-2026-87428 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-2026-87428 affect?

CVE-2026-87428 affects brocade active support connectivity gateway. Severity is high (CVSS 7.8). In Brocade ASCG before 3.5.0, a local unauthorized user on the ASCG VM who can issue a request to the SANnav host network namespace can extract stored management credentials for onboarded SANnav instances and compromise connected Brocade S

Routine

HIGH 7.8UPGRADE

CVE-2026-87428 is a high-severity flaw (CVSS 7.8) affecting brocade active support connectivity gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

In Brocade ASCG before 3.5.0, a local unauthorized user on the ASCG VM who can issue a request to the SANnav host network namespace can extract stored management credentials for onboarded SANnav instances and compromise connected Brocade SANnav servers or managed Brocade Fibre Channel switches.

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 99%)
CISA exploited list	No
Weakness	CWE-522
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 07:16 UTCPublished CVE record published
2026-10-14 18:51 UTCUpdated Record last modified

broadcom brocade active support connectivity gateway UPGRADE

Affected: < 3.5.0

Fixed in: 3.5.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy brocade-active-support-connectivity-gateway || rpm -q brocade-active-support-connectivity-gateway || brocade-active-support-connectivity-gateway --version

2. UPGRADE to 3.5.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade brocade-active-support-connectivity-gateway

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade brocade-active-support-connectivity-gateway

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

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-2026-87428?

brocade active support connectivity gateway: upgrade to 3.5.0. Exact commands for each OS are on this page.

Is CVE-2026-87428 being exploited?

CVE-2026-87428 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-2026-87428 affect?

CVE-2026-87428 affects brocade active support connectivity gateway. Severity is high (CVSS 7.8). In Brocade ASCG before 3.5.0, a local unauthorized user on the ASCG VM who can issue a request to the SANnav host network namespace can extract stored management credentials for onboarded SANnav instances and compromise connected Brocade S

How urgent is CVE-2026-87428?

Priority 27/100. High severity

Related CVEs

CVE-2023-5649 MEDIUM 5.5 UPGRADE An Improper Input Validation vulnerability for the registered case credentials in Brocade ASCG before v3.0 cou
CVE-2023-5648 MEDIUM 6.1 UPGRADE In Brocade ASCG before Brocade ASCG v3.0, several security-related HTTP Headers were missing in various Brocad
CVE-2026-87426 MEDIUM 4.3 UPGRADE An unauthenticated network-based attacker can query specific internal management endpoints on Brocade ASCG ver
CVE-2026-87425 MEDIUM 6.8 UPGRADE An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0
CVE-2026-87424 HIGH 8.8 UPGRADE A vulnerability in the SupportLink API authentication component of Brocade ASCG versions prior to 3.5.0 allows

References

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