# CVE-2021-22767: Other in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions)

> Improper input validation in PowerLogic EGX100/300 allows attackers to cause denial of service or remote code execution via crafted HTTP packets.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Jun 2021
- **Updated:** 29 May 2026
- **Also known as:** GHSA-88cq-9hm3-v7ff

## What is CVE-2021-22767?

CVE-2021-22767 is a critical vulnerability in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions), published on 11 Jun 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A CWE-20: Improper Input Validation vulnerability exists in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions) that could cause denial of service or remote code execution via a specially crafted HTTP packet.This CVE ID is unique from CVE-2021-2276

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2021-22767?

It affects 2 products.


Products: Schneider-Electric Powerlogic Egx100 Firmware, Schneider-Electric Powerlogic Egx300 Firmware.

## How do I fix CVE-2021-22767?

No fix has been published for CVE-2021-22767 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22767 being exploited?

There is no known exploitation of CVE-2021-22767 in the wild and no public exploit code.

## Other vulnerabilities in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions)

- [CVE-2021-22765](https://insights.sbomify.com/CVE-2021-22765/): Other in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions) (critical 9.8)
- [CVE-2021-22768](https://insights.sbomify.com/CVE-2021-22768/): Other in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions) (critical 9.8)
- [CVE-2021-22766](https://insights.sbomify.com/CVE-2021-22766/): Denial of service in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22767 and fix it if it is affected.

What it is: CVE-2021-22767 is a critical vulnerability in PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions), published on 11 Jun 2021. 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-2021-22767 in the wild and no public exploit code.

Affected product: PowerLogic EGX100 (Versions 3.0.0 and newer) and PowerLogic EGX300 (All Versions). 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-2021-22767/ (Markdown: https://insights.sbomify.com/CVE-2021-22767/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22767
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22767
- OSV: https://osv.dev/vulnerability/CVE-2021-22767

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22767/
Summaries are generated and may contain mistakes; the official description above is the record.