Skip to content
EXYS
Back to the CVEs

CVE-2019-3568

9.8, critical Known exploited

WhatsApp VOIP Stack Buffer Overflow Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
30% higher than 98.1% of scored CVEs
Exploitation
Confirmed in the wild
Published
14 May 20197 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 19 Apr 2022. US federal agencies had to remediate by 10 May 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

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.

Details

Vendor
Meta Platforms
Product
WhatsApp for Android
Weakness
CWE-122 (opens in a new tab)
Status
Analyzed
Updated
17 Jun 2026
Assigner
cve-assign@fb.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References 3

Advisories 2

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Meta Platforms CVEs

Every Meta Platforms CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2025-55177 Meta Platforms WhatsApp Incorrect Authorization Vulnerability KEV EPSS 5% 5.4, medium
  • CVE-2019-18426 WhatsApp Cross-Site Scripting Vulnerability KEV EPSS 68% 8.2, high

Beyond this page

Is CVE-2019-3568 in your network?

This page tells you how dangerous CVE-2019-3568 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2019-3568 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2019-3568 comes with the devices to patch.

    Learn more about EXYS7600 OCELOT

  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.