# CVE-2019-11931: Memory corruption in WhatsApp Business for Android

> Attackers can achieve remote code execution or denial of service by sending a malicious MP4 file to WhatsApp users.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 Nov 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6c69-f792-7pq7

## What is CVE-2019-11931?

CVE-2019-11931 is a high-severity memory corruption vulnerability in Facebook WhatsApp Business for Android, published on 14 Nov 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A stack-based buffer overflow could be triggered in WhatsApp by sending a specially crafted MP4 file to a WhatsApp user. The issue was present in parsing the elementary stream metadata of an MP4 file and could result in a DoS or RCE. This affects Android versions prior to 2.19.274, iOS versions prior to 2.19.100, Enterprise Client versions prior to 2.25.3, Business for Android versions prior to 2.19.104 and Business for iOS versions prior to 2.19.100.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2019-11931?

It affects 3 products.


Products: Whatsapp Whatsapp, Whatsapp Whatsapp Business, Whatsapp Whatsapp Enterprise Client.

## How do I fix CVE-2019-11931?

No fix has been published for CVE-2019-11931 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11931 being exploited?

There is no known exploitation of CVE-2019-11931 in the wild and no public exploit code.

Public exploit code:

- cve-2019-11931 (github_poc): https://github.com/kasif-dekel/whatsapp-rce-patched
- https://github.com/nop-team/CVE-2019-11931 (github_poc): https://github.com/nop-team/CVE-2019-11931

## Other vulnerabilities in Facebook WhatsApp Business for Android

- [CVE-2019-3568](https://insights.sbomify.com/CVE-2019-3568/): WhatsApp VOIP Stack Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2019-18426](https://insights.sbomify.com/CVE-2019-18426/): WhatsApp Cross-Site Scripting (high 8.2, exploited in the wild)
- [CVE-2025-55177](https://insights.sbomify.com/CVE-2025-55177/): Meta Platforms WhatsApp Incorrect Authorization (medium 5.4, exploited in the wild)
- [CVE-2022-36934](https://insights.sbomify.com/CVE-2022-36934/): Integer overflow in WhatsApp Business for Android (critical 9.8)
- [CVE-2021-24042](https://insights.sbomify.com/CVE-2021-24042/): Memory corruption in WhatsApp Business for Android (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-11931 and fix it if it is affected.

What it is: CVE-2019-11931 is a high-severity memory corruption vulnerability in Facebook WhatsApp Business for Android, published on 14 Nov 2019. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-11931 in the wild and no public exploit code.

Affected product: Facebook WhatsApp Business for Android. 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-2019-11931/ (Markdown: https://insights.sbomify.com/CVE-2019-11931/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11931
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11931
- OSV: https://osv.dev/vulnerability/CVE-2019-11931

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-11931/
Summaries are generated and may contain mistakes; the official description above is the record.