CVE Feed

    Dashboard / CVE / CVE-2021-24043

    CVE-2021-24043

    A missing bound check in RTCP flag parsing code prior to WhatsApp for Android v2.21.23.2, WhatsApp Business for Android v2.21.23.2, WhatsApp for iOS v2.21.230.6, WhatsApp Business for iOS 2.21.230.7, and WhatsApp Desktop v2.2145.0 could have allowed an out-of-bounds heap read if a user sent a malformed RTCP packet during an established call.

    Published:Feb 2, 2022
    Last Modified:Nov 21, 2024
    EPS:Feb 2, 2022
    EPSS Score:0.00788
    CVSS Score:9.1

    Affected Products

    Vendor
    Whatsapp
    Product
    Whatsapp
    Vendor
    Whatsapp
    Product
    Whatsapp Business

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-23866 (CVSS 4.3) — Incomplete validation of AI rich response messages for Instagram Reels in WhatsApp for iOS v2.25.8.0 to v2.26.…
    CVE-2026-23863 (CVSS 6.5) — An attachment spoofing issue in WhatsApp for Windows prior to v2.3000.1032164386.258709 could have allowed mal…
    CVE-2025-55179 (CVSS 5.4) — Incomplete validation of rich response messages in WhatsApp for iOS prior to v2.25.23.73, WhatsApp Business fo…
    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…
    CVE-2022-27492 (CVSS 7.8) — An integer underflow in WhatsApp could have caused remote code execution when receiving a crafted video file.…
    CVE-2022-36934 (CVSS 9.8) — An integer overflow in WhatsApp could result in remote code execution in an established video call.…
    CVE-2020-20096 (CVSS 6.5) — Whatsapp iOS 2.19.80 and prior and Android 2.19.222 and prior user interface does not properly represent URI m…

    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