CWE-270 (特权上下文切换错误) — Vulnerability Class 23

CWE-270 represents a privilege context switching error, a critical weakness where software fails to properly manage access rights during transitions between distinct operational contexts. This flaw typically arises when an application moves between high-privilege and low-privilege states without correctly resetting or verifying permissions, allowing attackers to exploit the temporary lapse in security controls. By manipulating the timing or sequence of these context switches, malicious actors can execute unauthorized actions or access sensitive data that should remain restricted. To mitigate this risk, developers must implement rigorous privilege management protocols, ensuring that permissions are explicitly validated and adjusted at every context boundary. Utilizing principle of least privilege, enforcing strict state transitions, and conducting thorough code reviews for context-switching logic are essential strategies to prevent such vulnerabilities from being exploited in production environments.