# CVE-2020-3266: Cisco SD-WAN Solution Command Injection Vulnerability

> Authenticated local attackers can inject arbitrary commands into the CLI to execute code with root privileges on Cisco SD-WAN devices.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/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:** 19 Mar 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-rm3p-cf5q-3f22

## What is CVE-2020-3266?

CVE-2020-3266 is a high-severity command injection vulnerability in Cisco SD-WAN Solution, published on 19 Mar 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the CLI of Cisco SD-WAN Solution software could allow an authenticated, local attacker to inject arbitrary commands that are executed with root privileges. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by authenticating to the device and submitting crafted input to the CLI utility. The attacker must be authenticated to access the CLI utility. A successful exploit could allow the attacker to execute commands with root privileges.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command), CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2020-3266?

It affects 1 product.


Products: Cisco Sd-Wan Firmware.

## How do I fix CVE-2020-3266?

No fix has been published for CVE-2020-3266 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3266 being exploited?

There is no known exploitation of CVE-2020-3266 in the wild and no public exploit code.

## Other vulnerabilities in Cisco SD-WAN Solution

- [CVE-2020-3381](https://insights.sbomify.com/CVE-2020-3381/): Cisco SD-WAN vManage Software Directory Traversal Vulnerability (high 8.8)
- [CVE-2020-3115](https://insights.sbomify.com/CVE-2020-3115/): Cisco SD-WAN Solution Local Privilege Escalation Vulnerability (high 8.8)
- [CVE-2019-1626](https://insights.sbomify.com/CVE-2019-1626/): Cisco SD-WAN Solution Privilege Escalation Vulnerability (high 8.8)
- [CVE-2020-3351](https://insights.sbomify.com/CVE-2020-3351/): Cisco SD-WAN Solution Software Denial of Service Vulnerability (high 8.6)
- [CVE-2020-3369](https://insights.sbomify.com/CVE-2020-3369/): Cisco SD-WAN vEdge Routers Denial of Service Vulnerability (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3266 and fix it if it is affected.

What it is: CVE-2020-3266 is a high-severity command injection vulnerability in Cisco SD-WAN Solution, published on 19 Mar 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-2020-3266 in the wild and no public exploit code.

Affected product: Cisco SD-WAN Solution. 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-2020-3266/ (Markdown: https://insights.sbomify.com/CVE-2020-3266/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3266
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3266
- OSV: https://osv.dev/vulnerability/CVE-2020-3266

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-3266/
Summaries are generated and may contain mistakes; the official description above is the record.