CWE-656 (依赖构建于封闭的安全性) — Vulnerability Class 10

CWE-656 represents a critical design flaw where security relies heavily on the secrecy of implementation details rather than robust cryptographic or access control mechanisms. Attackers typically exploit this weakness by reverse-engineering the software or analyzing network traffic to uncover hidden algorithms, keys, or logic paths. Once these secrets are exposed, the protective barrier collapses, granting unauthorized access or enabling data manipulation. To avoid this vulnerability, developers must adhere to Kerckhoffs’s principle, ensuring that system security does not depend on keeping the design secret. Instead, they should implement strong, standardized encryption and rigorous authentication protocols. Obscurity may serve as a minor layer in a defense-in-depth strategy, but it must never replace fundamental, mathematically sound security controls that remain effective even when the internal workings are fully known to adversaries.