UBUNTU-CVE-2025-54764

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    UBUNTU-CVE-2025-54764

    Published: 20 Oct 2025Last Modified: 22 Apr 2026
    Upstream:
    CVE-2025-54764

    Summary:

    Details: Mbed TLS before 3.6.5 allows a local timing attack against certain RSA operations, and direct calls to mbedtls_mpi_mod_inv or mbedtls_mpi_gcd.

    References: https://ubuntu.com/security/CVE-2025-54764, https://www.cve.org/CVERecord?id=CVE-2025-54764, https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2025-10-ssbleed-mstep/, https://mbed-tls.readthedocs.io/en/latest/tech-updates/security-advisories/, https://github.com/Mbed-TLS/mbedtls/compare/8f4779c6fa40374f88404787bebad85cc7e9969b..eb346801263ba4612b5e29633bd55fe18943ca65, https://github.com/Mbed-TLS/mbedtls/compare/9b54f934588bc373f3c3f5d45b5a3ad0ae003082..99270322ffac3546f813b1069fd6efb667cdce3f, https://github.com/Mbed-TLS/mbedtls/compare/246d86b941ef2d2bdeabd7035efe7200bc609b91..a08faf90700e46f6aa2a6e3fee8a6a71ddb816ce, https://github.com/Mbed-TLS/mbedtls/compare/246d86b941ef2d2bdeabd7035efe7200bc609b91..30f073236922fe4e528fdf82eb442babb50516fa

    Affected packages

    Package

    Name: mbedtls

    Purl: pkg:deb/ubuntu/[email protected]?arch=source&distro=xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    2.1.2-1

    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
    UBUNTU-CVE-2025-54764 | CVE-DB