CVE-2020-1894: WhatsApp

High severity, CVSS 8.8. EPSS: 1.8% chance of exploitation in the next 30 days.

A stack write overflow in WhatsApp for Android prior to v2.20.35, WhatsApp Business for Android prior to v2.20.20, WhatsApp for iPhone prior to v2.20.30, and WhatsApp Business for iPhone prior to v2.20.30 could have allowed arbitrary code execution when playing a specially crafted push to talk message.

Affected products

• WhatsApp WhatsApp: before 2.20.30 (fixed in 2.20.30); before 2.20.35 (fixed in 2.20.35)
• WhatsApp WhatsApp Business: before 2.20.20 (fixed in 2.20.20); before 2.20.30 (fixed in 2.20.30)

Published 2020-09-03. Last modified 2026-06-17.