# CVE-2020-3263: Cisco Webex Meetings Desktop App URL Filtering Arbitrary Program Execution Vulnerability

> An attacker can execute arbitrary programs on a user's system by tricking them into clicking a malicious URL in Cisco Webex Meetings.

- **Severity:** High 7.5 (`CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 18 Jun 2020
- **Updated:** 15 Nov 2024
- **Also known as:** GHSA-7rqg-3gh2-367f

## What is CVE-2020-3263?

CVE-2020-3263 is a high-severity command injection vulnerability in Cisco Webex Meetings, published on 18 Jun 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability in Cisco Webex Meetings Desktop App could allow an unauthenticated, remote attacker to execute programs on an affected end-user system. The vulnerability is due to improper validation of input that is supplied to application URLs. The attacker could exploit this vulnerability by persuading a user to follow a malicious URL. A successful exploit could allow the attacker to cause the application to execute other programs that are already present on the end-user system. If malicious files are planted on the system or on an accessible network file path, the attacker could execute arbitrary code on the affected system.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2020-3263?

It affects 1 product.


Products: Cisco Webex Meetings.

## How do I fix CVE-2020-3263?

No fix has been published for CVE-2020-3263 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-3263 being exploited?

There is no known exploitation of CVE-2020-3263 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Webex Meetings

- [CVE-2017-12368](https://insights.sbomify.com/CVE-2017-12368/): Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players (critical 9.6)
- [CVE-2017-12369](https://insights.sbomify.com/CVE-2017-12369/): Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players (critical 9.6)
- [CVE-2017-12370](https://insights.sbomify.com/CVE-2017-12370/): Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players (critical 9.6)
- [CVE-2017-12371](https://insights.sbomify.com/CVE-2017-12371/): Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players (critical 9.6)
- [CVE-2017-12372](https://insights.sbomify.com/CVE-2017-12372/): Memory corruption in Cisco WebEx Recording Format and Advanced Recording Format Players (critical 9.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-3263 and fix it if it is affected.

What it is: CVE-2020-3263 is a high-severity command injection vulnerability in Cisco Webex Meetings, published on 18 Jun 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2020-3263 in the wild and no public exploit code.

Affected product: Cisco Webex Meetings. 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-2020-3263/ (Markdown: https://insights.sbomify.com/CVE-2020-3263/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-3263
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-3263
- OSV: https://osv.dev/vulnerability/CVE-2020-3263

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-3263/
Summaries are generated and may contain mistakes; the official description above is the record.