# CVE-2016-9195: Denial of service in Cisco Wireless LAN Controller

> An unauthenticated remote attacker can cause a denial of service by disconnecting a single connection via RADIUS CoA requests in Cisco WLC.

- **Severity:** Medium 5.3 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Apr 2017
- **Updated:** 6 Aug 2024
- **Also known as:** GHSA-4gj6-j8jc-q433

## What is CVE-2016-9195?

CVE-2016-9195 is a medium-severity denial of service vulnerability in Cisco Wireless LAN Controller, published on 7 Apr 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability in RADIUS Change of Authorization (CoA) request processing in the Cisco Wireless LAN Controller (WLC) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition by disconnecting a single connection. This vulnerability affects Cisco Wireless LAN Controller running software release 8.3.102.0. More Information: CSCvb01835. Known Fixed Releases: 8.4(1.49) 8.3(111.0) 8.3(108.0) 8.3(104.24) 8.3(102.3).

Weakness: CWE-399

## Which versions are affected by CVE-2016-9195?

It affects 1 product.


Products: Cisco Wireless Lan Controller.

## How do I fix CVE-2016-9195?

No fix has been published for CVE-2016-9195 yet. Limit exposure of the affected software until one is available.

## Is CVE-2016-9195 being exploited?

There is no known exploitation of CVE-2016-9195 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Wireless LAN Controller

- [CVE-2014-0703](https://insights.sbomify.com/CVE-2014-0703/): Race condition in n/a (critical 10.0)
- [CVE-2014-0706](https://insights.sbomify.com/CVE-2014-0706/): Cisco Wireless LAN Controller (WLC) devices 7.2 before 7.2.115.2, 7.3, and 7.4 before 7.4.110.0 allow remote attackers to cause a denial of (high 7.8)
- [CVE-2014-0707](https://insights.sbomify.com/CVE-2014-0707/): Cisco Wireless LAN Controller (WLC) devices 7.2, 7.3, and 7.4 before 7.4.110.0 allow remote attackers to cause a denial of service (device r (high 7.8)
- [CVE-2018-0417](https://insights.sbomify.com/CVE-2018-0417/): Cisco Wireless LAN Controller Software GUI Privilege Escalation Vulnerability (high 7.5)
- [CVE-2019-1796](https://insights.sbomify.com/CVE-2019-1796/): Cisco Wireless LAN Controller Software IAPP Message Handling Denial of Service Vulnerabilities (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2016-9195 and fix it if it is affected.

What it is: CVE-2016-9195 is a medium-severity denial of service vulnerability in Cisco Wireless LAN Controller, published on 7 Apr 2017. 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-2016-9195 in the wild and no public exploit code.

Affected product: Cisco Wireless LAN Controller. 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-2016-9195/ (Markdown: https://insights.sbomify.com/CVE-2016-9195/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2016-9195
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-9195
- OSV: https://osv.dev/vulnerability/CVE-2016-9195

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From sbomify Insights: https://insights.sbomify.com/CVE-2016-9195/
Summaries are generated and may contain mistakes; the official description above is the record.