Base weakness
Incomplete
CWE-229: Improper Handling of Values
The product does not properly handle when the expected number of values for parameters, fields, or arguments is not provided in input, or if those values are undefined.
Last updated
16
Recorded CVEs
With this primary weakness
0
KEVs
In the CISA KEV catalog
Not rated
Likelihood of exploit
Per MITRE
Base
Abstraction
MITRE classification
Overview
CWE-229 (Improper Handling of Values) is a base-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
16 recorded CVEs are caused by CWE-229 (Improper Handling of Values). The highest-severity and most recent are shown first. 4 new CWE-229 CVEs have been recorded so far in 2026 (1 in 2025).