# CVE-2023-49255: Router console accessible without authentication

> An unauthenticated attacker can execute commands as a logged-in admin on Hongdian routers, potentially creating new admin accounts.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Jan 2024
- **Updated:** 3 Jun 2025
- **Also known as:** GHSA-fw6m-hgqv-hr8c

## What is CVE-2023-49255?

CVE-2023-49255 is a critical authentication bypass vulnerability in Hongdian H8951-4G-ESP, published on 12 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The router console is accessible without authentication at "data" field, and while a user needs to be logged in in order to modify the configuration, the session state is shared. If any other user is currently logged in, the anonymous user can execute commands in the context of the authenticated one. If the logged in user has administrative privileges, it is possible to use webadmin service configuration commands to create a new admin user with a chosen password.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2023-49255?

It affects 1 product.


Products: Hongdian H8951-4g-Esp Firmware.

## How do I fix CVE-2023-49255?

No fix has been published for CVE-2023-49255 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49255 being exploited?

There is no known exploitation of CVE-2023-49255 in the wild and no public exploit code.

## Other vulnerabilities in Hongdian H8951-4G-ESP

- [CVE-2023-49253](https://insights.sbomify.com/CVE-2023-49253/): Predefined root password (critical 9.8)
- [CVE-2023-49262](https://insights.sbomify.com/CVE-2023-49262/): Buffer overflow vulnerability in Cookie authentication field (critical 9.8)
- [CVE-2023-49254](https://insights.sbomify.com/CVE-2023-49254/): Command injection in the network test tools (high 8.8)
- [CVE-2023-49257](https://insights.sbomify.com/CVE-2023-49257/): Command execution using the certificate upload utility (high 8.8)
- [CVE-2023-49256](https://insights.sbomify.com/CVE-2023-49256/): Predictable encryption passphrase used in publicly accessible configuration file (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49255 and fix it if it is affected.

What it is: CVE-2023-49255 is a critical authentication bypass vulnerability in Hongdian H8951-4G-ESP, published on 12 Jan 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-2023-49255 in the wild and no public exploit code.

Affected product: Hongdian H8951-4G-ESP. 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-2023-49255/ (Markdown: https://insights.sbomify.com/CVE-2023-49255/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49255
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49255
- OSV: https://osv.dev/vulnerability/CVE-2023-49255

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49255/
Summaries are generated and may contain mistakes; the official description above is the record.