Class weakness
Incomplete
CWE-221: Information Loss or Omission
The product does not record, or improperly records, security-relevant information that leads to an incorrect decision or hampers later analysis.
Last updated
3
Recorded CVEs
With this primary weakness
0
KEVs
In the CISA KEV catalog
Not rated
Likelihood of exploit
Per MITRE
Class
Abstraction
MITRE classification
Overview
CWE-221 (Information Loss or Omission) is a class-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
3 recorded CVEs are caused by CWE-221 (Information Loss or Omission). The highest-severity and most recent are shown first. 3 new CWE-221 CVEs have been recorded so far in 2026.
Common consequences
What can happen when CWE-221 is exploited.