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    CVE-2021-41689

    DCMTK through 3.6.6 does not handle string copy properly. Sending specific requests to the dcmqrdb program, it would query its database and copy the result even if the result is null, which can incur a head-based overflow. An attacker can use it to launch a DoS attack.

    Published:Jun 28, 2022
    Last Modified:Nov 3, 2025
    EPS:Jun 28, 2022
    EPSS Score:0.00106
    CVSS Score:7.5

    Affected Products

    Vendor
    Dcmtk
    Product
    Dcmtk
    Vendor
    Offis
    Product
    Dcmtk

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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