# CVE-2019-11927: Integer overflow in WhatsApp for Android

> Remote attackers can execute arbitrary code via crafted WEBP images due to an integer overflow in media parsing.

- **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:** 27 Sep 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-qmff-84f8-hxmm

## What is CVE-2019-11927?

CVE-2019-11927 is a high-severity vulnerability in Facebook WhatsApp for Android, published on 27 Sep 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

An integer overflow in WhatsApp media parsing libraries allows a remote attacker to perform an out-of-bounds write on the heap via specially-crafted EXIF tags in WEBP images. This issue affects WhatsApp for Android before version 2.19.143 and WhatsApp for iOS before version 2.19.100.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2019-11927?

It affects 1 product.


Products: Whatsapp Whatsapp.

## How do I fix CVE-2019-11927?

No fix has been published for CVE-2019-11927 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-11927 being exploited?

There is no known exploitation of CVE-2019-11927 in the wild and no public exploit code.

## Other vulnerabilities in Facebook WhatsApp 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-2019-11927 and fix it if it is affected.

What it is: CVE-2019-11927 is a high-severity vulnerability in Facebook WhatsApp for Android, published on 27 Sep 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-2019-11927 in the wild and no public exploit code.

Affected product: Facebook WhatsApp 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-2019-11927/ (Markdown: https://insights.sbomify.com/CVE-2019-11927/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-11927
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-11927
- OSV: https://osv.dev/vulnerability/CVE-2019-11927

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-11927/
Summaries are generated and may contain mistakes; the official description above is the record.