CWE-280 (不充分权限或特权的处理不恰当) — Vulnerability Class 129

CWE-280 represents a critical logic flaw where software fails to adequately manage insufficient permissions or privileges during resource access. This weakness typically arises when applications assume elevated rights are always available, leading to unexpected code paths that may leave the system in an invalid or vulnerable state. Attackers exploit this by manipulating user contexts or environment variables to trigger privilege checks that fail silently or incorrectly, potentially bypassing security controls or causing denial of service. To mitigate this risk, developers must implement robust error handling that explicitly validates access rights before executing sensitive operations. By ensuring the application gracefully degrades or denies access when privileges are lacking, rather than proceeding with incomplete or unsafe actions, teams can prevent unauthorized data exposure and maintain system integrity against privilege-related attacks.