Common Weakness Enumeration

    CWE Definition / CWE-127

    CWE-127: Buffer Under-read

    The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations prior to the targeted buffer.

    Published:19 Jul 2006
    Organization:MITRE
    Modified:11 Dec 2025

    Related Weakness

    CWE-125: Out-of-bounds Read

    CWE-786: Access of Memory Location Before Start of Buffer

    CWE-127: Buffer Under-read | CVE-DB