# CVE-2019-15265: Cisco Aironet Access Points Bridge Protocol Data Unit Port Disable Denial of Service Vulnerability

> An unauthenticated adjacent attacker can cause a denial of service by sending crafted BPDU frames to Cisco Aironet Access Points.

- **Severity:** High 7.4 (`CVSS:3.0/AV:A/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Oct 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-xp9v-28f9-8837

## What is CVE-2019-15265?

CVE-2019-15265 is a high-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 16 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the bridge protocol data unit (BPDU) forwarding functionality of Cisco Aironet Access Points (APs) could allow an unauthenticated, adjacent attacker to cause an AP port to go into an error disabled state. The vulnerability occurs because BPDUs received from specific wireless clients are forwarded incorrectly. An attacker could exploit this vulnerability on the wireless network by sending a steady stream of crafted BPDU frames. A successful exploit could allow the attacker to cause a limited denial of service (DoS) attack because an AP port could go offline.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2019-15265?

It affects 5 products.


Products: Cisco Aironet 1540 Firmware, Cisco Aironet 1560 Firmware, Cisco Aironet 1800 Firmware, Cisco Aironet 2800 Firmware, Cisco Aironet 3800 Firmware.

## How do I fix CVE-2019-15265?

No fix has been published for CVE-2019-15265 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-15265 being exploited?

There is no known exploitation of CVE-2019-15265 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Aironet Access Point Software

- [CVE-2019-15260](https://insights.sbomify.com/CVE-2019-15260/): Cisco Aironet Access Points Unauthorized Access Vulnerability (critical 9.8)
- [CVE-2019-15264](https://insights.sbomify.com/CVE-2019-15264/): Cisco Aironet Access Points and Catalyst 9100 Access Points CAPWAP Denial of Service Vulnerability (high 7.4)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-15265 and fix it if it is affected.

What it is: CVE-2019-15265 is a high-severity denial of service vulnerability in Cisco Aironet Access Point Software, published on 16 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-15265 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-2019-15265/ (Markdown: https://insights.sbomify.com/CVE-2019-15265/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-15265
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-15265
- OSV: https://osv.dev/vulnerability/CVE-2019-15265

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-15265/
Summaries are generated and may contain mistakes; the official description above is the record.