# CVE-2021-22285: Denial of service in PNI800

> Attackers can cause denial of service or unresponsiveness in ABB SPIET800 and PNI800 modules due to improper handling of exceptional conditions.

- **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:** 4 Feb 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-24xv-3279-x7hj

## What is CVE-2021-22285?

CVE-2021-22285 is a high-severity denial of service vulnerability in ABB PNI800, published on 4 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Improper Handling of Exceptional Conditions, Improper Check for Unusual or Exceptional Conditions vulnerability in the ABB SPIET800 and PNI800 module that allows an attacker to cause the denial of service or make the module unresponsive.

Weakness: CWE-755 (Improper Handling of Exceptional Conditions), CWE-754 (Improper Check for Unusual or Exceptional Conditions)

## Which versions are affected by CVE-2021-22285?

It affects 2 products.


Products: Abb Pni800 Firmware, Abb Spiet800 Firmware.

## How do I fix CVE-2021-22285?

No fix has been published for CVE-2021-22285 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-22285 being exploited?

There is no known exploitation of CVE-2021-22285 in the wild and no public exploit code.

## Other vulnerabilities in ABB PNI800

- [CVE-2021-22286](https://insights.sbomify.com/CVE-2021-22286/): Denial of service in PNI800 (high 7.5)
- [CVE-2021-22288](https://insights.sbomify.com/CVE-2021-22288/): Denial of service in PNI800 (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-22285 and fix it if it is affected.

What it is: CVE-2021-22285 is a high-severity denial of service vulnerability in ABB PNI800, published on 4 Feb 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-2021-22285 in the wild and no public exploit code.

Affected product: ABB PNI800. 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-2021-22285/ (Markdown: https://insights.sbomify.com/CVE-2021-22285/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-22285
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22285
- OSV: https://osv.dev/vulnerability/CVE-2021-22285

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-22285/
Summaries are generated and may contain mistakes; the official description above is the record.