# CVE-2025-8320: Tesla Wall Connector Content-Length Header Improper Input Validation Remote Code Execution Vulnerability

> Network-adjacent attackers can execute arbitrary code on Tesla Wall Connector devices via improper validation of the HTTP Content-Length header.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 30 Jul 2025
- **Updated:** 30 Jul 2025
- **Also known as:** GHSA-xgh5-7gp7-7mg3

## What is CVE-2025-8320?

CVE-2025-8320 is a high-severity memory corruption vulnerability in Tesla Wall Connector, published on 30 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Tesla Wall Connector Content-Length Header Improper Input Validation Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Tesla Wall Connector devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the parsing of the HTTP Content-Length header. The issue results from the lack of proper validation of user-supplied data, which can result in memory access past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the device. Was ZDI-CAN-26300.

Weakness: CWE-1284 (Improper Validation of Specified Quantity in Input)

## Which versions are affected by CVE-2025-8320?

It affects 1 product.


Products: Tesla Wall Connector Firmware.

## How do I fix CVE-2025-8320?

No fix has been published for CVE-2025-8320 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-8320 being exploited?

There is no known exploitation of CVE-2025-8320 in the wild and no public exploit code.

## Other vulnerabilities in Tesla Wall Connector

- [CVE-2025-8321](https://insights.sbomify.com/CVE-2025-8321/): Tesla Wall Connector Firmware Downgrade Vulnerability (medium 6.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-8320 and fix it if it is affected.

What it is: CVE-2025-8320 is a high-severity memory corruption vulnerability in Tesla Wall Connector, published on 30 Jul 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-8320 in the wild and no public exploit code.

Affected product: Tesla Wall Connector. 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-2025-8320/ (Markdown: https://insights.sbomify.com/CVE-2025-8320/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-8320
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-8320
- OSV: https://osv.dev/vulnerability/CVE-2025-8320

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-8320/
Summaries are generated and may contain mistakes; the official description above is the record.