# CVE-2022-43377: Auth bypass in NetBotz 4 - 355/450/455/550/570

> Attackers can take over accounts via brute force attacks due to lack of authentication attempt restrictions on NetBotz devices.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Apr 2023
- **Updated:** 5 Feb 2025
- **Also known as:** GHSA-j893-r6jv-55xv

## What is CVE-2022-43377?

CVE-2022-43377 is a high-severity authentication bypass vulnerability in Schneider Electric NetBotz 4 - 355/450/455/550/570, published on 18 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A CWE-307: Improper Restriction of Excessive Authentication Attempts vulnerability exists that
could cause account takeover when a brute force attack is performed on the account.

 Affected Products: NetBotz 4 - 355/450/455/550/570 (V4.7.0

 and prior)

Weakness: CWE-307 (Improper Restriction of Excessive Authentication Attempts)

## Which versions are affected by CVE-2022-43377?

It affects 5 products.


Products: Schneider-Electric Netbotz 355 Firmware, Schneider-Electric Netbotz 450 Firmware, Schneider-Electric Netbotz 455 Firmware, Schneider-Electric Netbotz 550 Firmware, Schneider-Electric Netbotz 570 Firmware.

## How do I fix CVE-2022-43377?

No fix has been published for CVE-2022-43377 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-43377 being exploited?

There is no known exploitation of CVE-2022-43377 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric NetBotz 4 - 355/450/455/550/570

- [CVE-2022-43376](https://insights.sbomify.com/CVE-2022-43376/): Cross-site scripting in NetBotz 4 - 355/450/455/550/570 (high 7.6)
- [CVE-2022-43378](https://insights.sbomify.com/CVE-2022-43378/): Cross-site scripting in NetBotz 4 - 355/450/455/550/570 (medium 6.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-43377 and fix it if it is affected.

What it is: CVE-2022-43377 is a high-severity authentication bypass vulnerability in Schneider Electric NetBotz 4 - 355/450/455/550/570, published on 18 Apr 2023. 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-2022-43377 in the wild and no public exploit code.

Affected product: Schneider Electric NetBotz 4 - 355/450/455/550/570. 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-2022-43377/ (Markdown: https://insights.sbomify.com/CVE-2022-43377/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-43377
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-43377
- OSV: https://osv.dev/vulnerability/CVE-2022-43377

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-43377/
Summaries are generated and may contain mistakes; the official description above is the record.