CVE-2025-64282 in Radius Blocks Plugin
Summary
by MITRE • 12/18/2025
Authorization Bypass Through User-Controlled Key vulnerability in RadiusTheme Radius Blocks allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Radius Blocks: from n/a through 2.2.1.
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Analysis
by VulDB Data Team • 12/18/2025
The vulnerability identified as CVE-2025-64282 represents a critical authorization bypass flaw within the RadiusTheme Radius Blocks plugin, specifically targeting the core access control mechanisms that govern user permissions and security boundaries. This issue stems from an incorrectly configured access control security level that allows unauthorized users to manipulate authentication tokens or keys, effectively circumventing the intended authorization checks. The vulnerability manifests when the plugin fails to properly validate user-controlled input parameters that should normally be restricted to privileged users only, creating a pathway for attackers to escalate their privileges and gain access to restricted functionalities or data.
The technical implementation of this flaw occurs at the user-controlled key validation layer where the plugin accepts external inputs without sufficient sanitization or authorization verification. This misconfiguration enables attackers to craft malicious requests that exploit the plugin's access control logic, potentially allowing them to bypass authentication mechanisms entirely. The vulnerability is particularly concerning because it operates at the authorization level rather than authentication, meaning that even if users are successfully authenticated, they can still manipulate the system to access resources they should not be permitted to reach. This type of vulnerability aligns with CWE-285, which addresses improper authorization issues in software systems, and specifically relates to the broader category of access control flaws that undermine the fundamental security model of applications.
The operational impact of CVE-2025-64282 extends beyond simple privilege escalation, as it can potentially enable attackers to access sensitive administrative functions, modify plugin configurations, or even exfiltrate data from systems where the vulnerable plugin is deployed. The affected version range from n/a through 2.2.1 indicates that multiple iterations of the plugin contain this flaw, suggesting a persistent configuration issue that has not been properly addressed in the development cycle. Attackers exploiting this vulnerability can leverage the user-controlled key mechanism to manipulate the authorization flow, potentially gaining access to restricted administrative panels, modifying content, or even executing arbitrary code depending on the broader system architecture. This authorization bypass creates a persistent security risk that can be exploited repeatedly until the underlying configuration issue is resolved, making it particularly dangerous for environments where the plugin is widely deployed.
Organizations should implement immediate mitigations including disabling or restricting access to the vulnerable plugin functionality until a patched version is deployed, implementing additional access controls at the web application firewall level, and conducting comprehensive security audits to identify any unauthorized access that may have occurred. The vulnerability demonstrates the critical importance of proper access control implementation and configuration reviews, particularly when dealing with plugins or modules that handle user authentication and authorization. Security teams should also consider implementing monitoring solutions to detect suspicious access patterns that might indicate exploitation attempts, as the vulnerability could be leveraged in automated attack scenarios. This flaw underscores the necessity of following security best practices such as the principle of least privilege and regular security assessments, aligning with ATT&CK framework techniques related to privilege escalation and credential access. The remediation process should include thorough code reviews of access control mechanisms, implementation of proper input validation for user-controlled keys, and comprehensive testing of authorization flows to ensure that all security boundaries are properly enforced.