# CVE-2019-15959: Cisco Small Business SPA500 Series IP Phones Local Script Execution Vulnerability

> A physically proximate attacker can execute arbitrary commands with elevated privileges on Cisco SPA500 IP phones by inserting a USB drive containing malicious scripts.

- **Severity:** Medium 6.6 (`CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Sep 2020
- **Updated:** 13 Nov 2024
- **Also known as:** GHSA-6fhv-wpvj-mgr8

## What is CVE-2019-15959?

CVE-2019-15959 is a medium-severity command injection vulnerability in Cisco SPA525G2 5-line IP Phone, published on 23 Sep 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in Cisco Small Business SPA500 Series IP Phones could allow a physically proximate attacker to execute arbitrary commands on the device. The vulnerability is due to the presence of development testing and verification scripts that remained on the device. An attacker could exploit this vulnerability by accessing the physical interface of a device and inserting a USB storage device. A successful exploit could allow the attacker to execute scripts on the device in an elevated security context.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2019-15959?

It affects 1 product.


Products: Cisco Spa500 Series Ip Phones Firmware.

## How do I fix CVE-2019-15959?

No fix has been published for CVE-2019-15959 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-15959 being exploited?

There is no known exploitation of CVE-2019-15959 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-15959 and fix it if it is affected.

What it is: CVE-2019-15959 is a medium-severity command injection vulnerability in Cisco SPA525G2 5-line IP Phone, published on 23 Sep 2020. 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-2019-15959 in the wild and no public exploit code.

Affected product: Cisco SPA525G2 5-line IP Phone. 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-2019-15959/ (Markdown: https://insights.sbomify.com/CVE-2019-15959/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-15959
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-15959
- OSV: https://osv.dev/vulnerability/CVE-2019-15959

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-15959/
Summaries are generated and may contain mistakes; the official description above is the record.