Description

CWE-284: Improper Access Control

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "8.2",
  "pubDate": "2026-08-13T10:17:15.140Z",
  "pubdate": "2026-08-13T10:17:15.140Z",
  "executiveSummary": "The target system suffers from CWE-284, which is classified as an Improper Access Control vulnerability. This security defect arises when the software does not restrict or incorrectly restricts access to a resource from an unauthorized actor, permitting unintended interactions with system components, sensitive data, or privileged functions.\nThe primary impact of this vulnerability involves the potential compromise of confidentiality, integrity, and availability, depending on the specific resources improperly secured. Affected systems encompass any software components, applications, or network services that fail to enforce proper authorization checks before granting access to critical assets.\nRisk implications are significant, as unauthorized entities may bypass security boundaries to interact with restricted functionality, potentially leading to data exfiltration, unauthorized modifications, or complete system compromise. Attacker capabilities typically include leveraging improper privilege validation mechanisms to execute arbitrary actions without possessing the necessary credentials or authorization levels.\nExploitation requirements generally depend on network reachability to the vulnerable component and the absence of robust access control list (ACL) enforcement or role-based access control (RBAC) validation within the application logic. Mitigation necessitates comprehensive authorization enforcement across all system entry points and resource access pathways.",
  "technicalDetails": "The root cause of CWE-284 stems from architectural or implementation flaws in authorization logic, where the application fails to adequately verify whether an authenticated or unauthenticated user possesses the necessary permissions to access a specific resource or execute a restricted function. This absence of defense-in-depth and granular access checks allows malicious actors to directly invoke sensitive endpoints or manipulate internal state variables.\nThe vulnerable component typically resides within the access control module, routing framework, or API gateway of the application where authorization decisions are centrally handled or erroneously omitted. Affected versions include any software iteration lacking rigorous permission validation routines.\nAuthentication requirements vary based on the implementation; the flaw may be exploitable by unauthenticated remote attackers or authenticated low-privileged users attempting vertical or horizontal privilege escalation. Network exposure is generally high if the vulnerable endpoints are accessible via HTTP/HTTPS or other network protocols without network-layer segmentation.\nThe attack flow proceeds as follows: First, the attacker identifies a sensitive resource, file path, or API endpoint that lacks proper access control validation. Second, the attacker formulates a direct request to the targeted component, bypassing standard user interface workflows or navigation paths that normally restrict access. Third, the application processes the request without validating the requester's role, permissions, or security context against the requested resource. Finally, the vulnerable component grants access, returning sensitive data or executing the requested administrative action.\nPayload behavior during exploitation may involve supplying crafted parameters, manipulating session identifiers, or directly referencing restricted object identifiers (IDOR). Post-exploitation impact includes unauthorized data retrieval, execution of privileged commands, tampering with critical system configurations, and potential persistence establishment within the affected environment."
}