CISA KEV · Known exploitedCritical

CVE-2019-3568

Meta Platforms WhatsApp

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: 9.8
EPSS: 39.2%
CISA KEV: Listed
Published: 2019.05.15

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability39.2%

Technical severityCVSS 9.8

Vulnerability overview

Affected product and versions

Product: Meta Platforms WhatsApp
Affected versions: 2.19.134, unspecified, 2.19.44, 2.19.51, 2.18.348, 2.18.15, < 2.18.15, < 2.18.348, < 2.19.51, < 2.19.134, < 2.19.44
Fixed versions: 2.18.15, 2.18.348, 2.19.51, 2.19.134, 2.19.44

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.10

1
Identify
Confirm that Meta Platforms WhatsApp and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-122, CWE-787
KEV added: 2022.04.19
Ransomware use: 미확인