CWE-439: Behavioral Change in New Version or Environment
A's behavior or functionality changes with a new version of A, or a new environment, which is not known (or manageable) by B.
How it's found
Behavioral Change in New Version or Environment is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
Consequences
- Quality Degradation, Varies by Context
Where this fits in a TurboPentest engagement
TurboPentest's agentic pentest is powerful and covers a broad range of issues automatically. This particular class is best confirmed in a manual IntegSec engagement, where human pentesters apply deeper methodology and a larger context window than any automated pass.
Frequently asked questions
What is CWE-439?
A's behavior or functionality changes with a new version of A, or a new environment, which is not known (or manageable) by B.
How do you find Behavioral Change in New Version or Environment?
Behavioral Change in New Version or Environment is typically found by tracing untrusted input from where it enters the system to the point where it is used without the check or neutralization this weakness describes, combining manual code review with dynamic testing.
What is the impact of CWE-439?
Quality Degradation, Varies by Context
Does TurboPentest test for Behavioral Change in New Version or Environment?
TurboPentest's agentic pentest is powerful and covers a broad range of issues automatically. This particular class is best confirmed in a manual IntegSec engagement, where human pentesters apply deeper methodology and a larger context window than any automated pass.
Related CWEs
About this reference
These security references are maintained by IntegSec, an offensive-security firm whose team holds CISSP, OSCP, and OSCE certifications and has run thousands of penetration tests. Content is kept current as tools, standards, and attack techniques evolve.
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