CVE-2021-24026

Description

A missing bounds check within the audio decoding pipeline for WhatsApp calls in WhatsApp for Android prior to v2.21.3, WhatsApp Business for Android prior to v2.21.3, WhatsApp for iOS prior to v2.21.32, and WhatsApp Business for iOS prior to v2.21.32 could have allowed an out-of-bounds write.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.55%
Vendor Advisory whatsapp.com
Affected: Facebook WhatsApp Business for iOS
Affected: Facebook WhatsApp for iOS
Affected: Facebook WhatsApp Business for Android
Affected: Facebook WhatsApp for Android
Published at:
Updated at:

References

Link Tags
https://www.whatsapp.com/security/advisories/2021/ vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-24026?
CVE-2021-24026 has been scored as a critical severity vulnerability.
How to fix CVE-2021-24026?
To fix CVE-2021-24026, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-24026 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-24026 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-24026?
CVE-2021-24026 affects Facebook WhatsApp Business for iOS, Facebook WhatsApp for iOS, Facebook WhatsApp Business for Android, Facebook WhatsApp for Android.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.