CVE-2021-24041

Severity: critical (CVSS 9.8 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: 2021-12-07 · updated 2026-06-17
Weakness: CWE-122

Description

A missing bounds check in image blurring code prior to WhatsApp for Android v2.21.22.7 and WhatsApp Business for Android v2.21.22.7 could have allowed an out-of-bounds write if a user sent a malicious image.

Affected products

Facebook WhatsApp for Android: before 2.21.22.7 — fixed in 2.21.22.7
Whatsapp Business: before 2.21.22.7 — fixed in 2.21.22.7

How to fix

Upgrade to a fixed version: Facebook WhatsApp for Android 2.21.22.7; Whatsapp Business 2.21.22.7. Check the vendor advisory for mitigations.

References

https://www.whatsapp.com/security/advisories/2021/
https://www.whatsapp.com/security/advisories/2021/

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