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CVE-2021-24042

UNKNOWN
Published 2022-01-04T18:55:08.000Z
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Expert Analysis

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CVSS Score

V3.1
9.8
/10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.006
probability
of exploitation in the wild

There is a 0.5% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.669
Higher than 66.9% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

Facebook

WhatsApp Desktop

Affected Versions:

unspecified v2.2146
Facebook

WhatsApp for KaiOS

Affected Versions:

unspecified v2.2143
Facebook

WhatsApp Business for iOS

Affected Versions:

unspecified v2.21.230
Facebook

WhatsApp for iOS

Affected Versions:

unspecified v2.21.230
Facebook

WhatsApp Business for Android

Affected Versions:

unspecified v2.21.23
Facebook

WhatsApp for Android

Affected Versions:

unspecified v2.21.23

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed CRITICAL

GHSA-mp5j-h5hx-cfxc

Advisory Details

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 Scoring

CVSS Score

9.0

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-24042
WEB https://www.whatsapp.com/security/advisories/2021

Advisory provided by GitHub Security Advisory Database. Published: January 5, 2022, Modified: May 22, 2025

References

https://www.whatsapp.com/security/advisories/2021/
Published: 2022-01-04T18:55:08.000Z
Last Modified: 2025-05-22T18:36:53.143Z
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