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    CVE-2021-45450

    In Mbed TLS before 2.28.0 and 3.x before 3.1.0, psa_cipher_generate_iv and psa_cipher_encrypt allow policy bypass or oracle-based decryption when the output buffer is at memory locations accessible to an untrusted application.

    Published:Dec 21, 2021
    Last Modified:Jun 5, 2026
    EPS:Dec 21, 2021
    EPSS Score:0.00111
    CVSS Score:7.5

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Trustedfirmware
    Product
    Mbed Tls

    Exploits

    No exploit reference

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    References

    https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
    https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/
    https://security.gentoo.org/glsa/202301-08
    https://github.com/ARMmbed/mbedtls/releases/tag/v2.28.0
    https://github.com/ARMmbed/mbedtls/releases/tag/v3.1.0
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IL66WKJGXY5AXMTFE7QDMGL3RIBD6PX5/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TALJHOYAYSUJTLN6BYGLO4YJGNZUY74W/
    https://security.gentoo.org/glsa/202301-08

    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