# CVE-2019-1689: Cisco Webex Teams for iOS Arbitrary File Upload Vulnerability

> An authenticated attacker can upload malicious files to overwrite sensitive application data, causing denial of service in Cisco Webex Teams for iOS.

- **Severity:** High 7.3 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H`)
- **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:** 25 Feb 2019
- **Updated:** 21 Nov 2024
- **Also known as:** GHSA-rg62-gwr6-wv2q

## What is CVE-2019-1689?

CVE-2019-1689 is a high-severity vulnerability in Cisco Webex Teams, published on 25 Feb 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

A vulnerability in the client application for iOS of Cisco Webex Teams could allow an authenticated, remote attacker to upload arbitrary files within the scope of the iOS application. The vulnerability is due to improper input validation in the client application. An attacker could exploit this vulnerability by sending a malicious file to a targeted user and persuading the user to manually open it. An exploit could allow the attacker to overwrite sensitive application files and eventually cause a denial of service (DoS) condition by foreclosing future access to the system to the targeted user. This vulnerability is fixed in version 3.13.26920.

Weakness: CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2019-1689?

It affects 1 product.


Products: Cisco Webex Teams.

## How do I fix CVE-2019-1689?

No fix has been published for CVE-2019-1689 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-1689 being exploited?

There is no known exploitation of CVE-2019-1689 in the wild and no public exploit code.

## Other vulnerabilities in Cisco Webex Teams

- [CVE-2025-20236](https://insights.sbomify.com/CVE-2025-20236/): Cisco Webex App Client-Side Remote Code Execution Vulnerability (high 8.8)
- [CVE-2018-0387](https://insights.sbomify.com/CVE-2018-0387/): Code injection in Cisco Webex Teams unknown (high 8.8)
- [CVE-2018-0436](https://insights.sbomify.com/CVE-2018-0436/): Cisco Webex Teams Information Disclosure and Modification Vulnerability (high 8.7)
- [CVE-2020-3535](https://insights.sbomify.com/CVE-2020-3535/): Cisco Webex Teams Client for Windows DLL Hijacking Vulnerability (high 7.8)
- [CVE-2019-1636](https://insights.sbomify.com/CVE-2019-1636/): Cisco Webex Teams URI Handler Insecure Library Loading Vulnerability (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-1689 and fix it if it is affected.

What it is: CVE-2019-1689 is a high-severity vulnerability in Cisco Webex Teams, published on 25 Feb 2019. 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-2019-1689 in the wild and no public exploit code.

Affected product: Cisco Webex Teams. 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-2019-1689/ (Markdown: https://insights.sbomify.com/CVE-2019-1689/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-1689
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-1689
- OSV: https://osv.dev/vulnerability/CVE-2019-1689

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-1689/
Summaries are generated and may contain mistakes; the official description above is the record.