Base weakness
Draft
CWE-393: Return of Wrong Status Code
A function or operation returns an incorrect return value or status code that does not indicate the true result of execution, causing the product to modify its behavior based on the incorrect result.
Last updated
5
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
This can lead to unpredictable behavior. If the function is used to make security-critical decisions or provide security-critical information, then the wrong status code can cause the product to assume that an action is safe or correct, even when it is not.
Real-world CVEs
5 recorded CVEs are caused by CWE-393 (Return of Wrong Status Code). The highest-severity and most recent are shown first. 1 new CWE-393 CVE has been recorded so far in 2026 (2 in 2025).