# CVE-2022-4608: Memory corruption in RTU500 series

> A stack overflow in the RTU500 series causes an unexpected restart when IEC 62351-3 is enabled and session resumption expires.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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:** 26 Jul 2023
- **Updated:** 5 Mar 2025
- **Also known as:** GHSA-5568-g9wp-2cv7

## What is CVE-2022-4608?

CVE-2022-4608 is a high-severity memory corruption vulnerability in Hitachi Energy RTU500 series, published on 26 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability exists in HCI IEC 60870-5-104 function included in certain versions of the RTU500 series product. The vulnerability can only be exploited, if the HCI 60870-5-104 is configured with support for IEC 62351-3. After session resumption interval is expired an RTU500 initiated update of session parameters causes an unexpected restart due to a stack overflow.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2022-4608?

It affects 1 product.


Products: Hitachienergy Rtu500 Firmware.

## How do I fix CVE-2022-4608?

No fix has been published for CVE-2022-4608 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-4608 being exploited?

There is no known exploitation of CVE-2022-4608 in the wild and no public exploit code.

## Other vulnerabilities in Hitachi Energy RTU500 series

- [CVE-2022-2502](https://insights.sbomify.com/CVE-2022-2502/): Denial of service in RTU500 series (high 7.5)
- [CVE-2021-35533](https://insights.sbomify.com/CVE-2021-35533/): Specially Crafted IEC 60870-5-104 Packet Vulnerability in RTU500 series (high 7.5)
- [CVE-2023-6711](https://insights.sbomify.com/CVE-2023-6711/): Memory corruption in RTU500 series CMU Firmware (medium 5.9)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-4608 and fix it if it is affected.

What it is: CVE-2022-4608 is a high-severity memory corruption vulnerability in Hitachi Energy RTU500 series, published on 26 Jul 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-2022-4608 in the wild and no public exploit code.

Affected product: Hitachi Energy RTU500 series. 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-2022-4608/ (Markdown: https://insights.sbomify.com/CVE-2022-4608/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-4608
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-4608
- OSV: https://osv.dev/vulnerability/CVE-2022-4608

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-4608/
Summaries are generated and may contain mistakes; the official description above is the record.