# CVE-2022-20622: Cisco Embedded Wireless Controller with Catalyst Access Points IP Flood Denial of Service Vulnerability

> An unauthenticated remote attacker can cause a Cisco Embedded Wireless Controller to reload by flooding the management interface with IP traffic.

- **Severity:** High 8.6 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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:** 15 Apr 2022
- **Updated:** 6 Nov 2024
- **Also known as:** GHSA-6gj6-7h4g-v2wc

## What is CVE-2022-20622?

CVE-2022-20622 is a high-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 15 Apr 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in IP ingress packet processing of the Cisco Embedded Wireless Controller with Catalyst Access Points Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, causing a denial of service (DoS) condition. The device may experience a performance degradation in traffic processing or high CPU usage prior to the unexpected reload. This vulnerability is due to improper rate limiting of IP packets to the management interface. An attacker could exploit this vulnerability by sending a steady stream of IP traffic at a high rate to the management interface of the affected device. A successful exploit could allow the attacker to cause the device to reload.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2022-20622?

It affects 1 product.


Products: Cisco Aironet Access Point Software.

## How do I fix CVE-2022-20622?

No fix has been published for CVE-2022-20622 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-20622 being exploited?

There is no known exploitation of CVE-2022-20622 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Aironet Access Point Software

- [CVE-2017-3831](https://insights.sbomify.com/CVE-2017-3831/): Auth bypass in Cisco Mobility Express 1800 Access Point Series (critical 9.8)
- [CVE-2018-0234](https://insights.sbomify.com/CVE-2018-0234/): Denial of service in Cisco Aironet 1810, 1830, and 1850 Series Access Points (high 8.6)
- [CVE-2016-1419](https://insights.sbomify.com/CVE-2016-1419/): Denial of service in n/a (high 8.1)
- [CVE-2016-6362](https://insights.sbomify.com/CVE-2016-6362/): Privilege escalation in n/a (high 7.8)
- [CVE-2015-6367](https://insights.sbomify.com/CVE-2015-6367/): Denial of service in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-20622 and fix it if it is affected.

What it is: CVE-2022-20622 is a high-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 15 Apr 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-2022-20622 in the wild and no public exploit code.

Affected product: Cisco Aironet Access Point Software. 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-2022-20622/ (Markdown: https://insights.sbomify.com/CVE-2022-20622/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-20622
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-20622
- OSV: https://osv.dev/vulnerability/CVE-2022-20622

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-20622/
Summaries are generated and may contain mistakes; the official description above is the record.