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    CVE-2021-42781

    Heap buffer overflow issues were found in Opensc before version 0.22.0 in pkcs15-oberthur.c that could potentially crash programs using the library.

    Published:Mar 18, 2021
    Last Modified:Nov 3, 2025
    EPS:Apr 18, 2022
    EPSS Score:0.00081
    CVSS Score:5.3

    Affected Products

    Vendor
    Fedoraproject
    Product
    Fedora
    Vendor
    Opensc Project
    Product
    Opensc
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    No exploit reference

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    References

    https://bugzilla.redhat.com/show_bug.cgi?id=2016439
    https://github.com/OpenSC/OpenSC/commit/05648b06
    https://github.com/OpenSC/OpenSC/commit/17d8980c
    https://github.com/OpenSC/OpenSC/commit/40c50a3a
    https://github.com/OpenSC/OpenSC/commit/5d4daf6c
    https://github.com/OpenSC/OpenSC/commit/cae5c71f
    https://lists.debian.org/debian-lts-announce/2023/06/msg00025.html
    https://security.gentoo.org/glsa/202209-03
    https://bugzilla.redhat.com/show_bug.cgi?id=2016439
    https://github.com/OpenSC/OpenSC/commit/05648b06
    https://github.com/OpenSC/OpenSC/commit/17d8980c
    https://github.com/OpenSC/OpenSC/commit/40c50a3a
    https://github.com/OpenSC/OpenSC/commit/5d4daf6c
    https://github.com/OpenSC/OpenSC/commit/cae5c71f
    https://lists.debian.org/debian-lts-announce/2023/06/msg00025.html
    https://lists.debian.org/debian-lts-announce/2024/12/msg00026.html
    https://security.gentoo.org/glsa/202209-03

    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