CVE-2019-3568

Name: CVE-2019-3568
Creator: NVD / NIST
Published: 2019-05-14T20:29:03.187+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 39.17%

Last modified Jun 17, 2026

CVE-2019-3568 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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 has confirmed active exploitation in the wild. EPSS estimates a 39.17% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

39.17%

98.4th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by May 10, 2022.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Whatsapp	Whatsapp	< 2.18.15
Whatsapp	Whatsapp	< 2.18.348
Whatsapp	Whatsapp	< 2.19.51
Whatsapp	Whatsapp	< 2.19.134
Whatsapp	Whatsapp Business	< 2.19.44
Whatsapp	Whatsapp Business	< 2.19.51

References

http://www.securityfocus.com/bid/108329Broken Link, Third Party Advisory, VDB Entry
https://www.facebook.com/security/advisories/cve-2019-3568Third Party Advisory
http://www.securityfocus.com/bid/108329Broken Link, Third Party Advisory, VDB Entry
https://www.facebook.com/security/advisories/cve-2019-3568Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-3568US Government Resource

Timeline

Published: May 14, 2019
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2019-3568?

How severe is CVE-2019-3568?

CVE-2019-3568 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 39.17% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2019-3568?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-3568?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST