# CVE-2025-11625: Host verification bypass and credential leak

> An attacker can bypass host verification and steal client credentials in wolfSSH clients, requiring an upgrade to secure the connection.

- **Severity:** Critical 9.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/AU:Y/U:Red`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 21 Oct 2025
- **Updated:** 6 Jan 2026
- **Also known as:** GHSA-mhjf-4hv6-xqgr

## What is CVE-2025-11625?

CVE-2025-11625 is a critical authentication bypass vulnerability in wolfSSL wolfSSH, published on 21 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Improper host authentication vulnerability in wolfSSH version 1.4.20 and earlier clients that allows authentication bypass and leaking of clients credentials.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2025-11625?

It affects 1 product.


Products: Wolfssh Wolfssh.

## How do I fix CVE-2025-11625?

No fix has been published for CVE-2025-11625 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-11625 being exploited?

There is no known exploitation of CVE-2025-11625 in the wild and no public exploit code.

## Other vulnerabilities in wolfSSL wolfSSH

- [CVE-2022-32073](https://insights.sbomify.com/CVE-2022-32073/): Integer overflow in n/a (critical 9.8)
- [CVE-2025-14942](https://insights.sbomify.com/CVE-2025-14942/): Authentication Bypass (critical 9.4)
- [CVE-2024-2873](https://insights.sbomify.com/CVE-2024-2873/): User authentication bypass in wolfSSH server (critical 9.1)
- [CVE-2026-16516](https://insights.sbomify.com/CVE-2026-16516/): wolfSSH ECDSA host key curve not validated against negotiated algorithm (critical 9.0)
- [CVE-2026-83540](https://insights.sbomify.com/CVE-2026-83540/): wolfSSHd on Windows race condition leading to logon token reused across connections (high 7.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-11625 and fix it if it is affected.

What it is: CVE-2025-11625 is a critical authentication bypass vulnerability in wolfSSL wolfSSH, published on 21 Oct 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-11625 in the wild and no public exploit code.

Affected product: wolfSSL wolfSSH. 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-2025-11625/ (Markdown: https://insights.sbomify.com/CVE-2025-11625/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-11625
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-11625
- OSV: https://osv.dev/vulnerability/CVE-2025-11625

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-11625/
Summaries are generated and may contain mistakes; the official description above is the record.