# CVE-2024-8606: Fix 2FA bypass via RestAPI

> Authenticated users can bypass two-factor authentication via the RestAPI in Checkmk, allowing unauthorized access to protected resources.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Sep 2024
- **Updated:** 23 Sep 2024
- **Also known as:** GHSA-74jr-9xc3-xccr, UBUNTU-CVE-2024-8606

## What is CVE-2024-8606?

CVE-2024-8606 is a critical authentication bypass vulnerability in Checkmk Checkmk, published on 23 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Bypass of two factor authentication in RestAPI in Checkmk < 2.3.0p16 and < 2.2.0p34 allows authenticated users to bypass two factor authentication

Weakness: CWE-863 (Incorrect Authorization)

## Which versions are affected by CVE-2024-8606?

It affects 1 product.


Products: Checkmk Checkmk.

## How do I fix CVE-2024-8606?

No fix has been published for CVE-2024-8606 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-8606 being exploited?

There is no known exploitation of CVE-2024-8606 in the wild and no public exploit code.

## Other vulnerabilities in Checkmk Checkmk

- [CVE-2025-39666](https://insights.sbomify.com/CVE-2025-39666/): omd: Local privilege escalation when executing omd commands as root (critical 9.3)
- [CVE-2022-46836](https://insights.sbomify.com/CVE-2022-46836/): PHP code injection in watolib (critical 9.1)
- [CVE-2025-32919](https://insights.sbomify.com/CVE-2025-32919/): Privilege Escalation in Windows License plugin for Checkmk Windows Agent (high 8.8)
- [CVE-2024-28827](https://insights.sbomify.com/CVE-2024-28827/): Privilege escalation in Windows agent (high 8.8)
- [CVE-2024-28828](https://insights.sbomify.com/CVE-2024-28828/): 1-Click compromize via CSRF (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-8606 and fix it if it is affected.

What it is: CVE-2024-8606 is a critical authentication bypass vulnerability in Checkmk Checkmk, published on 23 Sep 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-8606 in the wild and no public exploit code.

Affected product: Checkmk Checkmk. 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-2024-8606/ (Markdown: https://insights.sbomify.com/CVE-2024-8606/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-8606
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-8606
- OSV: https://osv.dev/vulnerability/CVE-2024-8606

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-8606/
Summaries are generated and may contain mistakes; the official description above is the record.