# CVE-2024-14034: Hirschmann HiEOS Authentication Bypass via HTTP Management Module

> Unauthenticated remote attackers can bypass authentication on Hirschmann HiEOS devices to gain administrative access and modify firmware or configuration.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:N/AC:L/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:** 2 Apr 2026
- **Updated:** 14 May 2026
- **Also known as:** GHSA-6w3c-869c-375q

## What is CVE-2024-14034?

CVE-2024-14034 is a critical authentication bypass vulnerability in Belden Hirschmann HiEOS LRS11, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Hirschmann HiEOS devices versions prior to 01.1.00 contain an authentication bypass vulnerability in the HTTP(S) management module that allows unauthenticated remote attackers to gain administrative access by sending specially crafted HTTP(S) requests. Attackers can exploit improper authentication handling to obtain elevated privileges and perform unauthorized actions including configuration download or upload and firmware modification.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2024-14034?


## How do I fix CVE-2024-14034?

No fix has been published for CVE-2024-14034 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-14034 being exploited?

There is no known exploitation of CVE-2024-14034 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-14034 and fix it if it is affected.

What it is: CVE-2024-14034 is a critical authentication bypass vulnerability in Belden Hirschmann HiEOS LRS11, published on 2 Apr 2026. 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-2024-14034 in the wild and no public exploit code.

Affected product: Belden Hirschmann HiEOS LRS11. 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-2024-14034/ (Markdown: https://insights.sbomify.com/CVE-2024-14034/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-14034
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-14034
- OSV: https://osv.dev/vulnerability/CVE-2024-14034

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-14034/
Summaries are generated and may contain mistakes; the official description above is the record.