# CVE-2026-4157: ChargePoint Home Flex revssh Service Command Injection Remote Code Execution Vulnerability

> Network-adjacent attackers can execute arbitrary code as root on ChargePoint Home Flex devices via improper validation in OCPP message handling.

- **Severity:** High 7.5 (`CVSS:3.0/AV:A/AC:H/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:** 11 Apr 2026
- **Updated:** 13 Apr 2026
- **Also known as:** GHSA-9r43-wfq5-rv33

## What is CVE-2026-4157?

CVE-2026-4157 is a high-severity command injection vulnerability in ChargePoint Home Flex, published on 11 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

ChargePoint Home Flex revssh Service Command Injection Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of ChargePoint Home Flex devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of OCPP messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-26338.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2026-4157?

It affects 1 product.


Products: Chargepoint Home Flex Cph50 Firmware.

## How do I fix CVE-2026-4157?

No fix has been published for CVE-2026-4157 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4157 being exploited?

There is no known exploitation of CVE-2026-4157 in the wild and no public exploit code.

## Other vulnerabilities in ChargePoint Home Flex

- [CVE-2026-4155](https://insights.sbomify.com/CVE-2026-4155/): ChargePoint Home Flex Inclusion of Sensitive Information in Source Code Information Disclosure Vulnerability (high 7.5)
- [CVE-2026-4156](https://insights.sbomify.com/CVE-2026-4156/): ChargePoint Home Flex OCPP getpreq Stack-based Buffer Overflow Remote Code Execution Vulnerability (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4157 and fix it if it is affected.

What it is: CVE-2026-4157 is a high-severity command injection vulnerability in ChargePoint Home Flex, published on 11 Apr 2026. 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-2026-4157 in the wild and no public exploit code.

Affected product: ChargePoint Home Flex. 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-2026-4157/ (Markdown: https://insights.sbomify.com/CVE-2026-4157/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4157
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4157
- OSV: https://osv.dev/vulnerability/CVE-2026-4157

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-4157/
Summaries are generated and may contain mistakes; the official description above is the record.