Common Weakness Enumeration

    CWE Definition / CWE-391

    CWE-391: Unchecked Error Condition

    [PLANNED FOR DEPRECATION. SEE MAINTENANCE NOTES AND CONSIDER CWE-252, CWE-248, OR CWE-1069.] Ignoring exceptions and other error conditions may allow an attacker to induce unexpected behavior unnoticed.

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

    Related Weakness

    CWE-754: Improper Check for Unusual or Exceptional Conditions

    CWE-703: Improper Check or Handling of Exceptional Conditions

    CWE-703: Improper Check or Handling of Exceptional Conditions