CVE-2019-11931

Severity: high (CVSS 7.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-11-14 · updated 2026-06-17
Weakness: CWE-121

Description

A stack-based buffer overflow could be triggered in WhatsApp by sending a specially crafted MP4 file to a WhatsApp user. The issue was present in parsing the elementary stream metadata of an MP4 file and could result in a DoS or RCE. This affects Android versions prior to 2.19.274, iOS versions prior to 2.19.100, Enterprise Client versions prior to 2.25.3, Business for Android versions prior to 2.19.104 and Business for iOS versions prior to 2.19.100.

Affected products

Facebook WhatsApp for Android: through 2.18.368; before 2.19.100; before 2.19.274 — fixed in 2.19.100, 2.19.274
Whatsapp Business: before 2.19.100; before 2.19.104 — fixed in 2.19.100, 2.19.104
Whatsapp Enterprise Client: before 2.25.3 — fixed in 2.25.3

How to fix

Upgrade to a fixed version: Facebook WhatsApp for Android 2.19.100, 2.19.274; Whatsapp Business 2.19.100, 2.19.104; Whatsapp Enterprise Client 2.25.3. Check the vendor advisory for mitigations.

References

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