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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-2026-21848 HCL BigFix Service Management is affected by multiple security vulnerabilities. — HCL BigFix Service Management 5.0 Medium 2026-09-18
CVE-2026-82985 Nextcloud Photos智能相册共享文件泄露漏洞 — Server - - 2026-09-18
CVE-2026-77170 Deck配置API越权设置任意看板配置漏洞 — Deck - - 2026-09-18
CVE-2026-77169 Nextcloud团队文件夹应用权限绕过漏洞 — Team Folders - - 2026-09-18
CVE-2026-83944 Azure Logic Apps Elevation of Privilege Vulnerability — Azure Logic Apps 10.0 Critical 2026-09-17
CVE-2026-61700 MariaDB Connector/J does not enforce allowLocalInfile=false on server-initiated LOCAL INFILE requests — mariadb-connector-j 3.7 Low 2026-09-17
CVE-2026-50610 Improper Access control Vulnerability in NitroSense and PredatorSense Software — System Monitoring 7.4 High 2026-09-17
CVE-2026-50609 Unauthorized Registry Modification Vulnerability in NitroSense and PredatorSense Software — System Monitoring 7.4 High 2026-09-17
CVE-2026-50605 Privilege Escalation Vulnerability in NitroSense and PredatorSense Software — Agent Serivce 7.4 High 2026-09-17
CVE-2026-20121 CIsco FTD Bypass Access List — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 5.3 Medium 2026-09-16
CVE-2026-20120 Cisco FTD ACL bypass vulnerability — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 5.8 Medium 2026-09-16
CVE-2026-20332 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Access Control Vulnerabilities — Cisco Secure Firewall Adaptive Security Appliance (ASA) Software 9.9 Critical 2026-09-16
CVE-2026-20192 Cisco Identity Services Engine Hardening Release - Access Control Vulnerabilities — Cisco Identity Services Engine Software 10.0 Critical 2026-09-16
CVE-2026-20322 Cisco Nexus Dashboard Software Security Hardening Release September 2026 - Improper Access Control — Cisco Nexus Dashboard 9.9 Critical 2026-09-16
CVE-2026-90969 Devolutions Server 权限许可和访问控制问题漏洞 — Server - - 2026-09-15
CVE-2026-84048 Joomla Extension - joomgalleryfriends.net - Unauthenticated arbitrary file upload via the TUS endpoint in JoomGallery < 4.4.2 — JoomGallery extension for Joomla 6.3 Medium 2026-09-15
CVE-2026-63695 Dell SmartFabric OS 10.6.1.3以下版本会话固定漏洞 — SmartFabric OS10 Software 9.8 Critical 2026-09-15
CVE-2026-90851 PHPGurukul Hostel Management System checklogin.php access control — Hostel Management System 6.3 Medium 2026-09-15
CVE-2026-19290 IBM Sterling File Gateway is Vulnerable to Improper Access Control — Sterling File Gateway 7.5 High 2026-09-14
CVE-2026-54628 Anyquery: Server-Side Request Forgery (SSRF) via Unrestricted SQLite Virtual Table Modules in Server Mode — anyquery 8.6 High 2026-09-14
CVE-2026-76441 Cisco Secure Email Gateway Security Hardening Release — Cisco Secure Email and Web Manager 9.8 Critical 2026-09-14
CVE-2026-12258 Inadequate access control in the Hiperdino REST API — REST API 9.2 Critical 2026-09-14
CVE-2026-81566 Joomla Extension - joomshaper.com - Missing Access Control in Menu Item Creation in SP Page Builder (Free and Pro) 4.0.0 - 6.9.0 — SP Page Builder (Free and Pro) extension for Joomla 5.1 Medium 2026-09-14
CVE-2026-90565 Rizwan17 inventory-management-system dashboard.php access control — inventory-management-system 5.3 Medium 2026-09-13
CVE-2026-90518 PHPGurukul Bank Locker Management System sidebar.php access control — Bank Locker Management System 6.3 Medium 2026-09-13
CVE-2026-90507 vvbbnn00 WARP-Clash-API Subscription subscription.py get_surge_subscription access control — WARP-Clash-API 6.3 Medium 2026-09-13
CVE-2026-90493 Tonec Internet Download Manager Kernel Driver idmwfp.sys access control — Internet Download Manager 8.8 High 2026-09-13
CVE-2026-79725 Langflow is vulnerable to unauthorized file system access due to path traversal and missing storage path validation — Langflow OSS 6.5 Medium 2026-09-10
CVE-2026-81941 Langflow is vulnerable to arbitrary code execution due to multiple incomplete code security controls and missing execution guards — Langflow OSS 8.8 High 2026-09-10
CVE-2026-81046 Dell ThinOS 10 权限许可和访问控制问题漏洞 — ThinOS 10 9.4 Critical 2026-09-10

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.