⚠ Actively exploited
Added to CISA KEV on 2022-04-19. Federal agencies required to patch by 2022-05-10. Required action: Apply updates per vendor instructions..
Severity
9.8CRITICALNVD
EPSS
45.6%
top 2.38%
CISA KEV
KEV
Added 2022-04-19
Due 2022-05-10
Exploit
Exploited in wild
Active exploitation observed
Timeline
PublishedMay 14
KEV addedApr 19
KEV dueMay 10
Latest updateMay 7
CISA 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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages8 packages

CVEListV5facebook/whatsapp_business_for_androidunspecified2.19.134+1
CVEListV5facebook/whatsapp_for_windows_phoneunspecified2.18.348+1
CVEListV5facebook/whatsapp_for_androidunspecified2.19.134+1
CVEListV5facebook/whatsapp_business_for_iosunspecified2.19.51+1

🔴Vulnerability Details

3
GHSA
GHSA-cmw5-mmg8-r4fr: A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of SRTCP packets sent to a target ph2022-05-24
CVEList
CVE-2019-3568: A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target pho2019-05-14
VulnCheck
WhatsApp VOIP Stack Buffer Overflow Vulnerability2019

📋Vendor Advisories

1
CISA
WhatsApp VOIP Stack Buffer Overflow Vulnerability2022-04-19

🕵️Threat Intelligence

3
Bleepingcomputer
NSO Group fined $167M for spyware attacks on 1,400 WhatsApp users2025-05-07
Securelist
Fully equipped Spying Android RAT from Brazil: BRATA2019-08-29
Securelist
Fully equipped Spying Android RAT from Brazil: BRATA2019-08-29
CVE-2019-3568 — Heap-based Buffer Overflow | cvebase