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CWE-284 (访问控制不恰当) — Vulnerability Class 2612

2612 vulnerabilities classified as CWE-284 (访问控制不恰当). AI Chinese analysis included.

CWE-284 represents a critical security weakness where software fails to properly restrict access to sensitive resources, allowing unauthorized actors to interact with data or functions they should not reach. This flaw typically arises when developers neglect to implement robust authentication or authorization checks, enabling attackers to bypass security controls through direct URL manipulation, token forgery, or privilege escalation techniques. Exploitation often leads to severe consequences, including data breaches, unauthorized system modifications, or complete service disruption. To mitigate this risk, developers must enforce strict access control policies at every layer of the application architecture. This involves implementing comprehensive identity verification, applying the principle of least privilege, and rigorously validating user permissions before granting access to any protected resource, ensuring that only authenticated and authorized users can perform specific actions.

MITRE CWE Description
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. Access control involves the use of several protection mechanisms such as: Authentication (proving the identity of an actor) Authorization (ensuring that a given actor can access a resource), and Accountability (tracking of activities that were performed) When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses: Specification: incorrect privileges, permissions, ownership, etc. are explicitly specified for either the user or the resource (for example, setting a password file to be world-writable, or giving administrator capabilities to a guest user). This action could be performed by the program or the administrator. Enforcement: the mechanism contains errors that prevent it from properly enforcing the specified access control requirements (e.g., allowing the user to specify their own privileges, or allowing a syntactically-incorrect ACL to produce insecure settings). This problem occurs within the program itself, in that it does not actually enforce the intended security policy that the administrator specifies.
Common Consequences (1)
Other Varies by Context
Mitigations (2)
Architecture and Design, Operation Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separatio…
Examples (2)
This code temporarily raises the program's privileges to allow creation of a new user folder.
def makeNewUserDir(username): if invalidUsername(username): #avoid CWE-22 and CWE-78 print('Usernames cannot contain invalid characters') return False try: raisePrivileges() os.mkdir('/home/' + username) lowerPrivileges() except OSError: print('Unable to create new user directory for user:' + username) return False return True
Bad · Python
This function runs an arbitrary SQL query on a given database, returning the result of the query.
function runEmployeeQuery($dbName, $name){ mysql_select_db($dbName,$globalDbHandle) or die("Could not open Database".$dbName); //Use a prepared statement to avoid CWE-89 $preparedStatement = $globalDbHandle->prepare('SELECT * FROM employees WHERE name = :name'); $preparedStatement->execute(array(':name' => $name)); return $preparedStatement->fetchAll(); } /.../ $employeeRecord = runEmployeeQuery('EmployeeDB',$_GET['EmployeeName']);
Bad · PHP
CVE ID Title CVSS Severity Published
CVE-2026-45313 Sandboxie-Plus: Sandboxie APC Injection Sandbox Escape — Sandboxie 7.7 High 2026-07-15
CVE-2026-62314 Anubis: Policy bypass via client controlled X-Original-URI header — anubis 5.8 Medium 2026-07-15
CVE-2026-55234 Wekan: Broken access control: any authenticated user can move their Cards/Lists/Swimlanes into a private board they are not a member of (cross-board write via collection allow rule) — wekan 8.5 High 2026-07-15
CVE-2026-20150 Cisco RoomOS Security Hardening Release - Access Control Vulnerabilities — Cisco RoomOS Software 8.8 High 2026-07-15
CVE-2026-47164 Vaultwarden: SSO Email Auto-Link Can Bind an Existing Local Account to an Attacker-Controlled IdP Identity — vaultwarden 7.7 High 2026-07-15
CVE-2026-47301 Configuration Manager Elevation of Privilege Vulnerability — Microsoft Configuration Manager 8.8 High 2026-07-14
CVE-2026-58617 M365 Copilot for iOS Elevation of Privilege Vulnerability — Microsoft 365 Copilot for iOS 8.1 High 2026-07-14
CVE-2026-58545 Windows Kernel Security Feature Bypass Vulnerability — Windows 10 Version 1607 5.5 Medium 2026-07-14
CVE-2026-57088 Extensible Storage Engine (ESENT) Elevation of Privilege Vulnerability — Windows 10 Version 1809 7.8 High 2026-07-14
CVE-2026-56157 Microsoft SharePoint Server Spoofing Vulnerability — Microsoft SharePoint Enterprise Server 2016 5.4 Medium 2026-07-14
CVE-2026-50495 DNS Client Tampering Vulnerability — Windows 10 Version 1809 6.1 Medium 2026-07-14
CVE-2026-50465 Windows DNS Client Tampering Vulnerability — Windows 11 Version 24H2 7.1 High 2026-07-14
CVE-2026-50423 Windows Kernel Elevation of Privilege Vulnerability — Windows 10 Version 21H2 7.8 High 2026-07-14
CVE-2026-50418 Windows System Secure Feature Bypass Vulnerability — Windows 11 Version 24H2 5.1 Medium 2026-07-14
CVE-2026-50373 Windows Search Service Elevation of Privilege Vulnerability — Windows 10 Version 1809 7.8 High 2026-07-14
CVE-2026-50335 Windows Operating Systems Elevation of Privilege Vulnerability — Windows 10 Version 1809 7.8 High 2026-07-14
CVE-2026-50297 Win32k Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.0 High 2026-07-14
CVE-2026-50325 Win32k Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.0 High 2026-07-14
CVE-2026-50342 Windows MIDI Service Module Elevation of Privileges Vulnerability — Windows 11 Version 24H2 8.8 High 2026-07-14
CVE-2026-50351 Windows Audio Compression Manager (ACM) Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.8 High 2026-07-14
CVE-2026-49805 Win32k Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.0 High 2026-07-14
CVE-2026-50311 Windows Server Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.8 High 2026-07-14
CVE-2026-55014 Windows Remote Help Defense Elevation of Privilege Vulnerability — Windows Remote Help 7.8 High 2026-07-14
CVE-2026-57855 Cockpit CMS Missing Authorization in Bucket File Storage API — Cockpit CMS 8.8 High 2026-07-13
CVE-2026-15476 QILING Disk Master Kernel Driver diskbckp.sys access control — Disk Master 5.3 Medium 2026-07-12
CVE-2026-15475 MiniTool Partition Wizard Signed Kernel Driver pwdrvio.sys access control — Partition Wizard 5.3 Medium 2026-07-12
CVE-2026-20744 Hydro-Québec Le Circuit Electrique charging station backend Improper Access Control — Le Circuit Electrique charging station backend 9.8 Critical 2026-07-10
CVE-2026-55670 ZITADEL: Cross-Tenant User Leakage via Recycled Identifiers — zitadel - - 2026-07-10
CVE-2026-56335 Capgo - Channel Configuration Mutation via Write-Scoped API Keys — Capgo 6.5 Medium 2026-07-10
CVE-2026-15319 Sipeed PicoClaw Launcher access_control.go IPAllowlist access control — PicoClaw 7.3 High 2026-07-10

Vulnerabilities classified as CWE-284 (访问控制不恰当) represent 2612 CVEs. The CWE taxonomy describes the weakness; review individual CVEs for product-specific impact.