# CVE-2024-39815: Vonets WiFi Bridges Improper Check or Handling of Exceptional Conditions

> Unauthenticated remote attackers can crash the service via crafted HTTP requests, causing denial of service on Vonets industrial WiFi bridges.

- **Severity:** Critical 9.4 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 8 Aug 2024
- **Updated:** 21 Aug 2024
- **Also known as:** GHSA-cv5w-c2ph-vhhw

## What is CVE-2024-39815?

CVE-2024-39815 is a critical denial of service vulnerability in Vonets VAP11AC, published on 8 Aug 2024. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

Improper check or handling of exceptional conditions vulnerability 
affecting Vonets

 

 industrial wifi bridge relays and wifi bridge repeaters, software versions 3.3.23.6.9 and prior, enable an unauthenticated 
remote attacker to cause a denial of service. A specially-crafted 
HTTP request to pre-authentication resources can crash the service.

Weakness: CWE-703 (Improper Check or Handling of Exceptional Conditions)

## Which versions are affected by CVE-2024-39815?

It affects 14 products.


Products: Vonets Vap11ac Firmware, Vonets Vap11g-300 Firmware, Vonets Vap11g-500 Firmware, Vonets Vap11g-500s Firmware, Vonets Vap11g Firmware, Vonets Vap11n-300 Firmware, Vonets Vap11s-5g Firmware, Vonets Vap11s Firmware, Vonets Var11n-300 Firmware, Vonets Var1200-H Firmware, Vonets Var1200-L Firmware, Vonets Var600-H Firmware, Vonets Vbg1200 Firmware, Vonets Vga-1000 Firmware.

## How do I fix CVE-2024-39815?

No fix has been published for CVE-2024-39815 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-39815 being exploited?

There is no known exploitation of CVE-2024-39815 in the wild and no public exploit code.

## Other vulnerabilities in Vonets VAP11AC

- [CVE-2024-39791](https://insights.sbomify.com/CVE-2024-39791/): Vonets WiFi Bridges Stack-based Buffer Overflow (critical 10.0)
- [CVE-2024-37023](https://insights.sbomify.com/CVE-2024-37023/): Vonets WiFi Bridges Command Injection (critical 9.4)
- [CVE-2024-29082](https://insights.sbomify.com/CVE-2024-29082/): Vonets WiFi Bridges Improper Access Control (high 8.8)
- [CVE-2024-41161](https://insights.sbomify.com/CVE-2024-41161/): Vonets WiFi Bridges Use of Hard-coded Credentials (high 8.7)
- [CVE-2024-41936](https://insights.sbomify.com/CVE-2024-41936/): Vonets WiFi Bridges Path Traversal (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-39815 and fix it if it is affected.

What it is: CVE-2024-39815 is a critical denial of service vulnerability in Vonets VAP11AC, published on 8 Aug 2024. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-39815 in the wild and no public exploit code.

Affected product: Vonets VAP11AC. 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-2024-39815/ (Markdown: https://insights.sbomify.com/CVE-2024-39815/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-39815
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-39815
- OSV: https://osv.dev/vulnerability/CVE-2024-39815

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-39815/
Summaries are generated and may contain mistakes; the official description above is the record.