# CVE-2009-5040: Denial of service in n/a

> Authenticated users can crash Cisco CallManager Express devices by interacting with the extension mobility menu, causing a denial of service.

- **Severity:** Medium 6.8 (`AV:N/AC:L/Au:S/C:N/I:N/A:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Jan 2011
- **Updated:** 7 Aug 2024
- **Also known as:** GHSA-xjq5-7h7q-37wc

## What is CVE-2009-5040?

CVE-2009-5040 is a medium-severity denial of service vulnerability in Cisco Ios, published on 7 Jan 2011. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

CallManager Express (CME) on Cisco IOS before 15.0(1)XA allows remote authenticated users to cause a denial of service (device crash) by using an extension mobility (EM) phone to interact with the menu for SNR number changes, aka Bug ID CSCta63555.

Weakness: CWE-399

## Which versions are affected by CVE-2009-5040?

It affects 1 product.


Products: Cisco Ios.

## How do I fix CVE-2009-5040?

No fix has been published for CVE-2009-5040 yet. Limit exposure of the affected software until one is available.

## Is CVE-2009-5040 being exploited?

There is no known exploitation of CVE-2009-5040 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Ios

- [CVE-2017-12240](https://insights.sbomify.com/CVE-2017-12240/): Cisco IOS and IOS XE Software DHCP Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2017-3881](https://insights.sbomify.com/CVE-2017-3881/): Cisco IOS and IOS XE Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2018-0167](https://insights.sbomify.com/CVE-2018-0167/): Cisco IOS, XR, and XE Software Buffer Overflow (high 8.8, exploited in the wild)
- [CVE-2017-6736](https://insights.sbomify.com/CVE-2017-6736/): Cisco IOS and IOS XE Software SNMP Remote Code Execution (high 8.8, exploited in the wild)
- [CVE-2017-6737](https://insights.sbomify.com/CVE-2017-6737/): Cisco IOS and IOS XE Software SNMP Remote Code Execution (high 8.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2009-5040 and fix it if it is affected.

What it is: CVE-2009-5040 is a medium-severity denial of service vulnerability in Cisco Ios, published on 7 Jan 2011. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2009-5040 in the wild and no public exploit code.

Affected product: Cisco Ios. 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-2009-5040/ (Markdown: https://insights.sbomify.com/CVE-2009-5040/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2009-5040
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2009-5040
- OSV: https://osv.dev/vulnerability/CVE-2009-5040

---
From sbomify Insights: https://insights.sbomify.com/CVE-2009-5040/
Summaries are generated and may contain mistakes; the official description above is the record.