# CVE-2021-32998: Memory corruption in R-30iA, R-30iA Mate

> An out-of-bounds write in FANUC robot controllers allows remote attackers to execute arbitrary code, requiring a system restart to restore normal operation.

- **Severity:** High 7.4 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/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:** 7 Jan 2022
- **Updated:** 17 Apr 2025
- **Also known as:** GHSA-x25v-g44g-6xm4

## What is CVE-2021-32998?

CVE-2021-32998 is a high-severity memory corruption vulnerability in FANUC R-30iA, R-30iA Mate, published on 7 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The FANUC R-30iA and R-30iB series controllers are vulnerable to an out-of-bounds write, which may allow an attacker to remotely execute arbitrary code. INIT START/restore from backup required.

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

## Which versions are affected by CVE-2021-32998?

It affects 9 products.


Products: Fanuc R-30ia Firmware, Fanuc R-30ia Mate Firmware, Fanuc R-30ib Compact Firmware, Fanuc R-30ib Compact Plus Firmware, Fanuc R-30ib Firmware, Fanuc R-30ib Mate Firmware, Fanuc R-30ib Mate Plus Firmware, Fanuc R-30ib Mini Plus Firmware, Fanuc R-30ib Plus Firmware.

## How do I fix CVE-2021-32998?

No fix has been published for CVE-2021-32998 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-32998 being exploited?

There is no known exploitation of CVE-2021-32998 in the wild and no public exploit code.

## Other vulnerabilities in FANUC R-30iA, R-30iA Mate

- [CVE-2021-32996](https://insights.sbomify.com/CVE-2021-32996/): Integer overflow in R-30iA, R-30iA Mate (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-32998 and fix it if it is affected.

What it is: CVE-2021-32998 is a high-severity memory corruption vulnerability in FANUC R-30iA, R-30iA Mate, published on 7 Jan 2022. 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-2021-32998 in the wild and no public exploit code.

Affected product: FANUC R-30iA, R-30iA Mate. 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-2021-32998/ (Markdown: https://insights.sbomify.com/CVE-2021-32998/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-32998
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-32998
- OSV: https://osv.dev/vulnerability/CVE-2021-32998

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-32998/
Summaries are generated and may contain mistakes; the official description above is the record.