# CVE-2019-3568: WhatsApp VOIP Stack Buffer Overflow Vulnerability

> CVE-2019-3568: WhatsApp VOIP Stack Buffer Overflow Vulnerability. CVSS 9.8 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2019-3568
Last updated: 2025-10-21T23:45:37Z

- Published: 2019-05-14 19:52 UTC · Updated: 2025-10-21 23:45 UTC · Assigner: facebook
- CVSS: 9.8 (CVSS 3.1) · Severity: Critical · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS: 30.1%, 98th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-04-19, federal due date 2022-05-10, ransomware use: Unknown
- CWE: CWE-122

## Description

A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number. The issue affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp for iOS prior to v2.19.51, WhatsApp Business for iOS prior to v2.19.51, WhatsApp for Windows Phone prior to v2.18.348, and WhatsApp for Tizen prior to v2.18.15.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Facebook: WhatsApp Business for Android
- Facebook: WhatsApp Business for iOS
- Facebook: WhatsApp for Android
- Facebook: WhatsApp for iOS
- Facebook: WhatsApp for Tizen
- Facebook: WhatsApp for Windows Phone

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2019-3568)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2019-3568)
- [https://www.facebook.com/security/advisories/cve-2019-3568](https://www.facebook.com/security/advisories/cve-2019-3568)
- [http://www.securityfocus.com/bid/108329](http://www.securityfocus.com/bid/108329)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2019-3568 · Markdown: https://rewindex.com/cve/CVE-2019-3568.md · JSON: https://rewindex.com/api/v1/cves/CVE-2019-3568 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:46:49.920Z