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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-2026-2849 yeqifu warehouse Cache Sync CacheController.java syncCache access control — warehouse 5.4 Medium 2026-02-20
CVE-2026-21627 Extension - tassos.gr - SQL injection and Unauthenticated File Read in Novarain/Tassos Framework v4.10.14 – v6.0.37 for Joomla — Novarain/Tassos Framework (plg_system_nrframework) 9.1AI Critical AI 2026-02-20
CVE-2026-26328 OpenClaw iMessage group allowlist authorization inherited DM pairing-store identities — openclaw 6.5 Medium 2026-02-19
CVE-2026-26325 OpenClaw Node host system.run rawCommand/command mismatch can bypass allowlist/approvals — openclaw 7.2 High 2026-02-19
CVE-2026-21535 Microsoft Teams Information Disclosure Vulnerability — Microsoft Teams 8.2 High 2026-02-19
CVE-2025-12884 Advanced Ads – Ad Manager & AdSense <= 2.0.14 - Missing Authorization to Authenticated (Subscriber+) Ad Placements Update — Advanced Ads – Ad Manager & AdSense 4.3 Medium 2026-02-19
CVE-2026-25229 Gogs Authorization Bypass Allows Cross-Repository Label Modification — gogs 4.3 - 2026-02-19
CVE-2026-2669 Rongzhitong Visual Integrated Command and Dispatch Platform User delete access control — Visual Integrated Command and Dispatch Platform 6.5 Medium 2026-02-18
CVE-2026-2668 Rongzhitong Visual Integrated Command and Dispatch Platform User add access control — Visual Integrated Command and Dispatch Platform 7.3 High 2026-02-18
CVE-2026-2667 Rongzhitong Visual Integrated Command and Dispatch Platform api access control — Visual Integrated Command and Dispatch Platform 5.3 Medium 2026-02-18
CVE-2023-38005 Improper Access Control and Exposure of Information Through Directory Listing vulnerabilities affect IBM Cloud Pak System[, ] — Cloud Pak System 4.3 Medium 2026-02-17
CVE-2026-2592 Zarinpal Gateway for WooCommerce <= 5.0.16 - Improper Access Control to Payment Status Update — Zarinpal Gateway 7.7 High 2026-02-17
CVE-2026-2549 zhanghuanhao LibrarySystem 图书馆管理系统 BookController.java access control — LibrarySystem 图书馆管理系统 7.3 High 2026-02-16
CVE-2026-23856 Dell iDRAC Service Module 访问控制错误漏洞 — iDRAC Service Module 7.8 High 2026-02-12
CVE-2026-2250 Unauthenticated Data Export and Source Code Disclosure via /dbviewer/ in METIS WIC — METIS WIC 7.5 High 2026-02-11
CVE-2025-29939 AMD Processors 安全漏洞 — AMD EPYC™ 9004 Series Processors 5.1AI Medium AI 2026-02-10
CVE-2026-21238 Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability — Windows 10 Version 1607 7.8 High 2026-02-10
CVE-2026-21255 Windows Hyper-V Security Feature Bypass Vulnerability — Windows 10 Version 1607 8.8 High 2026-02-10
CVE-2026-0653 Insecure Access Control on TP-Link Tapo D235 and C260 — Tapo C260 v1 7.2 High 2026-02-10
CVE-2026-25231 FileRise affected by an Unauthenticated File Read Due to Insufficient Access Control — FileRise 7.5 High 2026-02-09
CVE-2026-2206 WeKan Administrative Repair fixDuplicateLists.js FixDuplicateBleed access control — WeKan 6.3 Medium 2026-02-08
CVE-2026-2075 yeqifu warehouse Role-Permission Binding RoleController.java saveRolePermission access control — warehouse 6.3 Medium 2026-02-07
CVE-2026-2009 SourceCodester Gas Agency Management System createUser.php access control — Gas Agency Management System 6.3 Medium 2026-02-06
CVE-2026-24300 Azure Front Door Elevation of Privilege Vulnerability — Azure Front Door 9.8 Critical 2026-02-05
CVE-2026-24302 Azure Arc Elevation of Privilege Vulnerability — Azure ARC 8.6 High 2026-02-05
CVE-2026-1964 WeKan REST Endpoint boards.js BoardTitleRESTBleed access control — WeKan 4.3 Medium 2026-02-05
CVE-2026-1963 WeKan Attachment Storage attachments.js MoveStorageBleed access control — WeKan 6.3 Medium 2026-02-05
CVE-2026-1962 WeKan Attachment Migration attachmentMigration.js AttachmentMigrationBleed access control — WeKan 6.3 Medium 2026-02-05
CVE-2026-1898 WeKan LDAP User Sync syncUser.js SyncLDAPBleed access control — WeKan 6.3 Medium 2026-02-05
CVE-2026-1896 WeKan Migration Operation comprehensiveBoardMigration.js ComprehensiveBoardMigration MigrationBleed access control — WeKan 6.3 Medium 2026-02-04

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.