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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-2026-47279 NocoDB: Hidden LTAR Column Exposure in Public Shared-View Relation Endpoints — nocodb - - 2026-06-23
CVE-2026-54761 Traefik: Kubernetes Gateway crossProviderNamespaces bypass allows HTTPRoute outside the allowlist to expose internal Traefik services — traefik - - 2026-06-23
CVE-2026-49411 Deno Node TCPWrap numeric hostname aliases bypass --deny-net resolved-IP deny checks — deno 6.5 Medium 2026-06-23
CVE-2026-54010 Open WebUI: Forged chat-file link allows cross-user file read and deletion — open-webui 8.3 High 2026-06-23
CVE-2026-54012 Open WebUI: Forged model meta.knowledge allows cross-user file read and deletion — open-webui 7.1 High 2026-06-23
CVE-2026-54015 Open WebUI: Prompt history IDOR: unbound history_id allows cross-prompt read and deletion — open-webui 6.4 Medium 2026-06-23
CVE-2026-34913 revive adserver 权限许可和访问控制问题漏洞 — Adserver - - 2026-06-23
CVE-2026-44958 revive adserver 权限许可和访问控制问题漏洞 — Adserver - - 2026-06-23
CVE-2026-44957 revive adserver 权限许可和访问控制问题漏洞 — Adserver - - 2026-06-23
CVE-2026-34912 revive adserver 权限许可和访问控制问题漏洞 — Adserver - - 2026-06-23
CVE-2025-15619 HCL Connections is vulnerable to broken access control — Connections 3.5 Low 2026-06-23
CVE-2026-56253 Capgo - Unauthenticated Organization Member Email Disclosure via get_org_members RPC — Capgo 7.5 High 2026-06-21
CVE-2026-12786 Ezbsystems UltraISO Premium Edition Kernel Driver bootpt64.sys access control — UltraISO Premium Edition 7.8 High 2026-06-21
CVE-2026-12784 IM-Magic Partition Resizer Kernel Driver MDA_NTDRV.sys access control — Partition Resizer 7.8 High 2026-06-21
CVE-2026-12782 EaseUS Partition Master Kernel Driver EUEDKEPM.sys access control — Partition Master 7.8 High 2026-06-21
CVE-2026-12781 EaseUS Partition Master Kernel Driver epmntdrv.sys access control — Partition Master 7.8 High 2026-06-21
CVE-2026-12780 AOMEI Backupper Kernel Driver amwrtdrv.sys access control — Backupper 7.8 High 2026-06-21
CVE-2026-12779 AOMEI Dynamic Disk Manager Kernel Driver ddmdrv.sys access control — Dynamic Disk Manager 7.8 High 2026-06-21
CVE-2026-12778 AOMEI Partition Assistant Kernel Driver ampa10.sys access control — Partition Assistant 7.8 High 2026-06-21
CVE-2026-56082 Capgo - Unauthenticated Cross-Tenant Billing Log Tampering via public.record_build_time RPC — capgo 7.5 High 2026-06-19
CVE-2026-4027 FlexNet Manager Suite Attachment File Disclosure — FlexNet Manager Suite - - 2026-06-19
CVE-2026-4026 FlexNet Manager Suite Privilege Escalation Vulnerability — FlexNet Manager Suite - - 2026-06-19
CVE-2026-46461 Dell Server Hardware Manager 权限许可和访问控制问题漏洞 — Server Hardware Manager 7.8 High 2026-06-19
CVE-2026-47647 Dynamics 365 Elevation of Privilege Vulnerability — Microsoft Dynamics 365 9.9 Critical 2026-06-18
CVE-2026-46699 conda-smithy vulnerable to misrouted repository invitation by conda-forge-webservices[bot] due to GitHub username takeover leading to unintended write access in conda-forge feedstock repository — conda-smithy 7.6 High 2026-06-18
CVE-2026-48617 Node.js 权限许可和访问控制问题漏洞 — node - - 2026-06-18
CVE-2026-54533 vantage6 node has an Improper Access Control issue — vantage6 - - 2026-06-17
CVE-2026-12529 SourceCodester CET Automated Grading System with AI Predictive Analytics Student Self-Registration Endpoint index.php access control — CET Automated Grading System with AI Predictive Analytics 7.3 High 2026-06-17
CVE-2026-35066 Dell PowerFlex Manager 权限许可和访问控制问题漏洞 — PowerFlex 7.1 High 2026-06-17
CVE-2026-35067 Dell PowerFlex Manager 权限许可和访问控制问题漏洞 — PowerFlex 5.7 Medium 2026-06-17

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.