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    CVE-2018-6344

    A heap corruption in WhatsApp can be caused by a malformed RTP packet being sent after a call is established. The vulnerability can be used to cause denial of service. It affects WhatsApp for Android prior to v2.18.293, WhatsApp for iOS prior to v2.18.93, and WhatsApp for Windows Phone prior to v2.18.172.

    Published:Dec 31, 2018
    Last Modified:May 6, 2025
    EPS:Dec 31, 2018
    EPSS Score:0.00574
    CVSS Score:7.5

    Affected Products

    Vendor
    Whatsapp
    Product
    Whatsapp

    Exploits

    https://googleprojectzero.blogspot.com/2018/12/adventures-in-video-conferencing-part-3.htmlhttps://googleprojectzero.blogspot.com/2018/12/adventures-in-video-conferencing-part-3.html

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-92 Forced Integer Overflow

    Related CVEs

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    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