Vulnerability Intelligence Report
CVE-2021-24042
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.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
Exploitability:3.9
Impact Score:5.9
EPSS Probability:1.24%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-122 ↗Heap-based Buffer Overflow (CWE-122)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| WhatsApp Desktop | unspecified < v2.2146 (affected), v2.2146 < unspecified (unaffected) | |
| WhatsApp for KaiOS | unspecified < v2.2143 (affected), v2.2143 < unspecified (unaffected) | |
| WhatsApp Business for iOS | unspecified < v2.21.230 (affected), v2.21.230 < unspecified (unaffected) | |
| WhatsApp for iOS | unspecified < v2.21.230 (affected), v2.21.230 < unspecified (unaffected) | |
| WhatsApp Business for Android | unspecified < v2.21.23 (affected), v2.21.23 < unspecified (unaffected) | |
| WhatsApp for Android | unspecified < v2.21.23 (affected), v2.21.23 < unspecified (unaffected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.242%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | |
| Reserved | 2021-01-13T00:00:00 |
| Published | 2022-01-04T18:55:08 |
| Last Updated | 2025-05-22T18:36:53 |
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