Common Weakness Enumeration

    CWE Definition / CWE-401

    CWE-401: Missing Release of Memory after Effective Lifetime

    The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

    Published:19 Jul 2006
    Organization:MITRE
    Modified:30 Apr 2026

    Related Weakness

    CWE-772: Missing Release of Resource after Effective Lifetime

    CWE-404: Improper Resource Shutdown or Release

    CWE-404: Improper Resource Shutdown or Release