Common Weakness Enumeration

    CWE Definition / CWE-394

    CWE-394: Unexpected Status Code or Return Value

    The product does not properly check when a function or operation returns a value that is legitimate for the function, but is not expected by the product.

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

    Related Weakness

    CWE-754: Improper Check for Unusual or Exceptional Conditions