# CVE-2026-87425: Security feature bypass in Brocade Active Support Connectivity Gateway

> Unauthenticated attackers can inject unauthorized CA certificates into the trust store, enabling Man-in-the-Middle attacks on network communications.

- **Severity:** High 7.6 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Oct 2026
- **Updated:** 8 Oct 2026
- **Also known as:** GHSA-42g7-mp3f-vxqx

## What is CVE-2026-87425?

CVE-2026-87425 is a high-severity vulnerability in Brocade Active Support Connectivity Gateway, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

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.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2026-87425?

It affects 1 product.


Products: Broadcom Brocade Active Support Connectivity Gateway.

## How do I fix CVE-2026-87425?

No fix has been published for CVE-2026-87425 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-87425 being exploited?

There is no known exploitation of CVE-2026-87425 in the wild and no public exploit code.

## Other vulnerabilities in Brocade Active Support Connectivity Gateway

- [CVE-2026-85421](https://insights.sbomify.com/CVE-2026-85421/): Missing authorization in Brocade Active Support Connectivity Gateway (high 8.7)
- [CVE-2026-85489](https://insights.sbomify.com/CVE-2026-85489/): Missing authorization in Brocade Active Support Connectivity Gateway (high 8.7)
- [CVE-2026-85423](https://insights.sbomify.com/CVE-2026-85423/): A vulnerability has been identified in the data collection service of Brocade ASCG versions before 3.5.0. (high 8.6)
- [CVE-2026-85486](https://insights.sbomify.com/CVE-2026-85486/): Code injection in Brocade Active Support Connectivity Gateway (high 8.6)
- [CVE-2026-85487](https://insights.sbomify.com/CVE-2026-85487/): Path traversal in Brocade Active Support Connectivity Gateway (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-87425 and fix it if it is affected.

What it is: CVE-2026-87425 is a high-severity vulnerability in Brocade Active Support Connectivity Gateway, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-87425 in the wild and no public exploit code.

Affected product: Brocade Active Support Connectivity Gateway. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-87425/ (Markdown: https://insights.sbomify.com/CVE-2026-87425/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-87425
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-87425
- OSV: https://osv.dev/vulnerability/CVE-2026-87425

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-87425/
Summaries are generated and may contain mistakes; the official description above is the record.