# CVE-2022-34756: Memory corruption in Easergy P5

> A buffer overflow in the Easergy P5 Web HMI allows remote attackers to execute arbitrary code or crash the HTTPS stack.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 13 Jul 2022
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-8995-37xw-9hjj

## What is CVE-2022-34756?

CVE-2022-34756 is a high-severity memory corruption vulnerability in Schneider Electric Easergy P5, published on 13 Jul 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A CWE-120: Buffer Copy without Checking Size of Input vulnerability exists that could result in remote code execution or the crash of HTTPs stack which is used for the device Web HMI. Affected Products: Easergy P5 (V01.401.102 and prior)

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2022-34756?

It affects 1 product.


Products: Schneider-Electric Easergy P5 Firmware.

## How do I fix CVE-2022-34756?

No fix has been published for CVE-2022-34756 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-34756 being exploited?

There is no known exploitation of CVE-2022-34756 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric Easergy P5

- [CVE-2022-22723](https://insights.sbomify.com/CVE-2022-22723/): Memory corruption in Easergy P5 (All firmware versions prior to V01.401.101) (high 8.8)
- [CVE-2022-22722](https://insights.sbomify.com/CVE-2022-22722/): Hardcoded credentials in Easergy P5 (high 7.5)
- [CVE-2022-34757](https://insights.sbomify.com/CVE-2022-34757/): Weak cryptography in Easergy P5 (medium 6.7)
- [CVE-2022-34758](https://insights.sbomify.com/CVE-2022-34758/): Denial of service in Easergy P5 (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-34756 and fix it if it is affected.

What it is: CVE-2022-34756 is a high-severity memory corruption vulnerability in Schneider Electric Easergy P5, published on 13 Jul 2022. 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-2022-34756 in the wild and no public exploit code.

Affected product: Schneider Electric Easergy P5. 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-2022-34756/ (Markdown: https://insights.sbomify.com/CVE-2022-34756/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-34756
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-34756
- OSV: https://osv.dev/vulnerability/CVE-2022-34756

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-34756/
Summaries are generated and may contain mistakes; the official description above is the record.