Findings

CVE-2019-3568

WhatsApp VOIP Stack Buffer Overflow Vulnerability

Published May 14, 2019 · updated Jun 16, 2026 · whatsapp 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.

Timeline

Detection, updates, and resolution for this record.

  1. May 14, 2019 · Catalog

    Detected

    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

  2. Apr 19, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 10, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Required action

Apply updates per vendor instructions.

CISA due date May 10, 2022

Affected

  • cpe whatsapp/whatsappversion unspecified
  • cpe whatsapp/whatsapp businessversion unspecified
  • vendor Meta Platforms WhatsAppversion unspecified

Sources

  • CISA KEVCVE-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 phone number.

    cisa.gov
  • CVE.orgCVE-2019-3568

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2019-3568

    30-day exploitation probability 30.1%

    first.org
  • NIST NVDCVE-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 phone number. The issue affects WhatsApp for Android prior to v2.19.134, WhatsApp Business for Android prior to v2.19.44, WhatsApp fo

    nvd.nist.gov

References

CVE-2019-3568 · ZeroDay Findings