CVE-2026-87425: An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0

Q: How do I fix CVE-2026-87425?

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

Q: Is CVE-2026-87425 being exploited?

CVE-2026-87425 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-2026-87425 affect?

CVE-2026-87425 affects brocade active support connectivity gateway. Severity is medium (CVSS 6.8). An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0. By supplying an unauthorized Certificate Authority (CA) certificate to an unauthenticated management interface, the attacker can

Q: How urgent is CVE-2026-87425?

Priority 24/100. No elevated risk signals yet.

Routine

MEDIUM 6.8UPGRADE

CVE-2026-87425 is a medium-severity flaw (CVSS 6.8) affecting brocade active support connectivity gateway. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0. By supplying an unauthorized Certificate Authority (CA) certificate to an unauthenticated management interface, the attacker can cause the system to trust unauthorized certificates, potentially enabling Man-in-the-Middle (MITM) attacks against outbound communications with managed switches and peer nodes.

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	6.8 (Medium)
Attack vector	Adjacent network
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.1% (top 99%)
CISA exploited list	No
Weakness	CWE-295
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 18:50 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-2026-87425?

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

Is CVE-2026-87425 being exploited?

CVE-2026-87425 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-2026-87425 affect?

CVE-2026-87425 affects brocade active support connectivity gateway. Severity is medium (CVSS 6.8). An unauthenticated remote attacker can modify the TLS client trust store in Brocade ASCG versions before 3.5.0. By supplying an unauthorized Certificate Authority (CA) certificate to an unauthenticated management interface, the attacker can

How urgent is CVE-2026-87425?

Priority 24/100. No elevated risk signals yet.

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References

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