# CVE-2024-8256: Incorrect Permission Assignment in RutOS based routers and TSWOS based managed switches

> A lower-privileged user can access critical device resources via the API due to incorrect permission handling in Teltonika RUTOS and TSWOS devices.

- **Severity:** Medium 5.9 (`CVSS:4.0/AV:A/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Dec 2024
- **Updated:** 10 Dec 2024
- **Also known as:** GHSA-h933-4qv8-27xj

## What is CVE-2024-8256?

CVE-2024-8256 is a medium-severity missing authorization vulnerability in Teltonika Networks RUTOS, published on 10 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In Teltonika Networks RUTOS devices, running on versions 7.0 to 7.8 (excluding) and TSWOS devices running on versions 1.0 to 1.3 (excluding), due to incorrect permission handling a vulnerability exists which allows a lower privileged user with default permissions to access critical device resources via the API.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2024-8256?


## How do I fix CVE-2024-8256?

No fix has been published for CVE-2024-8256 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-8256 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-8256 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-8256 and fix it if it is affected.

What it is: CVE-2024-8256 is a medium-severity missing authorization vulnerability in Teltonika Networks RUTOS, published on 10 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-8256 exists.

Affected product: Teltonika Networks RUTOS. 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-2024-8256/ (Markdown: https://insights.sbomify.com/CVE-2024-8256/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-8256
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-8256
- OSV: https://osv.dev/vulnerability/CVE-2024-8256

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-8256/
Summaries are generated and may contain mistakes; the official description above is the record.