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CVE-2021-24042

Published: Jan 4, 2022Updated: May 22, 2025 Sources: CVE List NVDCWE-122
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
1.2%
Top 34.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

The calling logic for WhatsApp for Android prior to v2.21.23, WhatsApp Business for Android prior to v2.21.23, WhatsApp for iOS prior to v2.21.230, WhatsApp Business for iOS prior to v2.21.230, WhatsApp for KaiOS prior to v2.2143, WhatsApp Desktop prior to v2.2146 could have allowed an out-of-bounds write if a user makes a 1:1 call to a malicious actor.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-122CWE-787

Affected Products

whatsappwhatsapp
Mobile App
Communications / messaging-chat
WhatsApp DesktopFacebookCommunications
WhatsApp for KaiOSFacebookCommunications
WhatsApp Business for iOSFacebookCommunications
WhatsApp for iOSFacebookCommunications
whatsappcommercialCommunicationsaka whatsapp business, whatsapp desktop
facebookcommercialUSCommunicationsaka meta, facebook inc.
and 2 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

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

Timeline

Published
Jan 4, 2022
Last Updated
May 22, 2025

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