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    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.

    Published:Jan 4, 2022
    Last Modified:May 22, 2025
    EPS:Jan 4, 2022
    EPSS Score:0.0055
    CVSS Score:9.8

    Affected Products

    Vendor
    Whatsapp
    Product
    Whatsapp

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    CVE-2025-55177 (CVSS 5.4) — Incomplete authorization of linked device synchronization messages in WhatsApp for iOS prior to v2.25.21.73, W…
    CVE-2025-30401 (CVSS 6.7) — A spoofing issue in WhatsApp for Windows prior to version 2.2450.6 displayed attachments according to their MI…
    CVE-2023-38538 (CVSS 5) — A race condition in an event subsystem led to a heap use-after-free issue in established audio/video calls tha…
    CVE-2023-38537 (CVSS 5.6) — A race condition in a network transport subsystem led to a heap use-after-free issue in established or unsilen…
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    CVE-2022-36934 (CVSS 9.8) — An integer overflow in WhatsApp could result in remote code execution in an established video call.…
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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High