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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-2025-24917 Improper Access Control leads to Local Privilege Escalation — Network Monitor 7.8 High 2025-05-23
CVE-2025-24916 Improper Access Control leads to Local Priviledge Escalation — Network Monitor 7.0 High 2025-05-23
CVE-2025-3580 Grafana OSS 安全漏洞 — Grafana 5.5 Medium 2025-05-23
CVE-2025-20242 Cisco Unified Contact Center Enterprise 访问控制错误漏洞 — Cisco Unified Contact Center Enterprise 6.5 Medium 2025-05-21
CVE-2025-47794 Nextcloud Server vulnerable to insecure temporary file creation, race with write access and permission — security-advisories 2.6 Low 2025-05-16
CVE-2025-47792 Nextcloud Desktop 3rdparty applications can create share links via socket API — security-advisories 5.0 Medium 2025-05-16
CVE-2025-2306 Improper Access Control vulnerability in LIVE CONTRACT — LIVE CONTRACT 5.9 Medium 2025-05-16
CVE-2025-47161 Microsoft Defender for Endpoint Elevation of Privilege Vulnerability — Microsoft Defender for Endpoint for Linux 7.8 High 2025-05-15
CVE-2025-43563 ColdFusion | Improper Access Control (CWE-284) — ColdFusion 9.1 Critical 2025-05-13
CVE-2025-29973 Microsoft Azure File Sync Elevation of Privilege Vulnerability — Azure File Sync 7.0 High 2025-05-13
CVE-2025-33072 Microsoft msagsfeedback.azurewebsites.net Information Disclosure Vulnerability — Microsoft msagsfeedback.azurewebsites.net 8.1 High 2025-05-08
CVE-2025-20223 Cisco Catalyst Center 访问控制错误漏洞 — Cisco Digital Network Architecture Center (DNA Center) 4.7 Medium 2025-05-07
CVE-2025-20190 Cisco IOS XE Wireless Controller Software 访问控制错误漏洞 — Cisco IOS XE Software 6.5 Medium 2025-05-07
CVE-2025-20137 Cisco IOS 访问控制错误漏洞 — IOS 4.7 Medium 2025-05-07
CVE-2025-46816 goshs route not protected, allows command execution — goshs 9.8AI Critical AI 2025-05-06
CVE-2025-21470 Improper Access Control in Camera Driver — Snapdragon 7.8 High 2025-05-06
CVE-2025-21469 Improper Access Control in Camera Driver — Snapdragon 7.8 High 2025-05-06
CVE-2024-49842 Improper Access Control in Hypervisor — Snapdragon 7.8 High 2025-05-06
CVE-2025-46589 Huawei HarmonyOS 安全漏洞 — HarmonyOS 4.4 Medium 2025-05-06
CVE-2025-46588 Huawei HarmonyOS 安全漏洞 — HarmonyOS 4.4 Medium 2025-05-06
CVE-2025-4316 Devolutions Server 安全漏洞 — Server 4.3AI Medium AI 2025-05-05
CVE-2025-4269 TOTOLINK A720R Log cstecgi.cgi access control — A720R 6.5 Medium 2025-05-05
CVE-2024-30146 HCL Domino Leap is affected by improper access control — HCL Domino Leap 4.1 Medium 2025-04-30
CVE-2025-24887 OpenCTI bypass of protected attribute update — opencti 6.3 Medium 2025-04-30
CVE-2025-46331 OpenFGA Authorization Bypass — openfga 9.8AI Critical AI 2025-04-30
CVE-2025-32376 Discourse DM limits aren’t always properly enforced — discourse 4.3AI Medium AI 2025-04-30
CVE-2025-27134 Privilege escalation in Joplin server via user patch endpoint — joplin 8.8 High 2025-04-30
CVE-2025-4119 Weitong Mall Product Statistics queryTotal access control — Mall 5.3 Medium 2025-04-30
CVE-2025-4118 Weitong Mall Product History historyList access control — Mall 5.3 Medium 2025-04-30
CVE-2025-4067 ScriptAndTools Online-Travling-System viewpackage.php access control — Online-Travling-System 5.3 Medium 2025-04-29

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.