How severe is CVE-2019-3568?

CVE-2019-3568 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 30.1% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2019-3568: WhatsApp VOIP Stack Buffer Overflow

CISA Known Exploited Vulnerabilities

WhatsApp VOIP Stack Buffer Overflow Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-04-19

Remediation due

2022-05-10

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2019-3568

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.

Severity

CVSS 3.1 · CISA9.8 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Facebook	WhatsApp for Android	2.19.134 unspecified to <2.19.134
Facebook	WhatsApp Business for Android	2.19.44 unspecified to <2.19.134
Facebook	WhatsApp for iOS	2.19.51 unspecified to <2.19.51
Facebook	WhatsApp Business for iOS	2.19.51 unspecified to <2.19.51
Facebook	WhatsApp for Windows Phone	2.18.348 unspecified to <2.18.348
Facebook	WhatsApp for Tizen	2.18.15 unspecified to <2.18.15

References

2 Links

Vulnerability databases

108329

Other references

https://www.facebook.com/security/advisories/cve-2019-3568

Record Details

Published

2019-05-14

Last updated

2025-10-21

Assigner (CNA)

facebook

Credited to

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CVE-2025-551775.4

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Related Tool Categories

Tool categories that test for or protect against this vulnerability class.

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Fuzzing Binary Exploitation

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.