Variant weakness
Draft
CWE-232: Improper Handling of Undefined Values
The product does not handle or incorrectly handles when a value is not defined or supported for the associated parameter, field, or argument name.
Last updated
9
Recorded CVEs
With this primary weakness
0
KEVs
In the CISA KEV catalog
Not rated
Likelihood of exploit
Per MITRE
Variant
Abstraction
MITRE classification
Overview
CWE-232 (Improper Handling of Undefined Values) is a variant-level software weakness catalogued by MITRE in the Common Weakness Enumeration (CWE). It describes a recurring type of mistake that can lead to exploitable security vulnerabilities.
Real-world CVEs
9 recorded CVEs are caused by CWE-232 (Improper Handling of Undefined Values). The highest-severity and most recent are shown first. 1 new CWE-232 CVE has been recorded so far in 2026 (3 in 2025).