CVE-2021-31609

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    CVE-2021-31609

    Published: 7 Sept 2021Last Modified: 10 Mar 2026

    Summary:

    Details: The Bluetooth Classic implementation in Silicon Labs iWRAP 6.3.0 and earlier does not properly handle the reception of an oversized LMP packet greater than 17 bytes, allowing attackers in radio range to trigger a crash in WT32i via a crafted LMP packet.

    References: , https://dl.packetstormsecurity.net/papers/general/braktooth.pdf, https://www.silabs.com/wireless/bluetooth/bluegiga-classic-legacy-modules/device.wt32i-a

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: N/A

    Events:

    Introduced- None
    Fixed -None

    Affected versions

    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
    CVE-2021-31609 | CVE-DB