CVE-2021-27433

    Dashboard / Vulnerabilities / CVE-2021-27433

    CVE-2021-27433

    Published: 3 May 2022Last Modified: 9 Jul 2026

    Summary:

    Details: ARM mbed-ualloc memory library version 1.3.0 is vulnerable to integer wrap-around in function mbed_krbs, which can lead to arbitrary memory allocation, resulting in unexpected behavior such as a crash or a remote code injection/execution.

    References: https://www.cisa.gov/uscert/ics/advisories/icsa-21-119-04, https://github.com/ARMmbed/mbed-os/pull/14408

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 35ab210fb219029a7c388898d641915f869c2a36
    Fixed -None

    Affected versions

    1.3.0

    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-2021-27433 | CVE-DB