CVE-2025-27216 in UISP Application
Summary
by MITRE • 08/21/2025
Multiple Incorrect Permission Assignment for Critical Resource in UISP Application may allow a malicious actor with certain permissions to escalate privileges.
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Analysis
by VulDB Data Team • 08/21/2025
The vulnerability identified as CVE-2025-27216 represents a critical weakness in the UISP application's permission management system that enables privilege escalation through improper access control assignments. This flaw resides within the application's core authorization framework where critical resources are not properly protected by adequate permission checks, creating a pathway for attackers to gain elevated privileges beyond their intended access level. The vulnerability specifically affects the application's handling of critical resources that should be restricted to administrative or privileged users but are instead accessible through manipulated permission assignments that bypass normal security controls.
The technical implementation of this vulnerability stems from inadequate validation of user permissions when accessing critical system resources within the UISP application. Attackers with limited initial access rights can exploit this weakness to manipulate permission assignments and gain unauthorized access to resources that should be protected by stronger access controls. The flaw likely manifests in the application's resource access control logic where permission checks are either missing, insufficiently enforced, or can be bypassed through predictable manipulation of access tokens or session data. This misconfiguration creates a scenario where legitimate users with lower privileges can potentially escalate their access level to administrative or root privileges.
From an operational impact perspective, this vulnerability poses significant risk to organizations using the UISP application as it could enable attackers to gain complete control over network management systems and related infrastructure. The privilege escalation capability allows malicious actors to modify network configurations, access sensitive data, and potentially disrupt critical network services. The vulnerability's impact is amplified by the fact that it requires only certain existing permissions to be exploited, suggesting that attackers need relatively low initial access to potentially gain complete system control. Organizations relying on UISP for network management and monitoring could face severe consequences including data breaches, service disruption, and unauthorized access to critical network infrastructure.
Mitigation strategies for this vulnerability should focus on implementing robust permission validation mechanisms and strengthening access control enforcement throughout the application. Organizations should immediately review and audit existing user permissions to ensure proper least-privilege principles are enforced and that critical resources are adequately protected. The application should be updated with patches that address the permission assignment flaws and implement proper access control checks for all critical resources. Security configurations should be reviewed to ensure that permission assignments cannot be manipulated by users with limited access rights. Additionally, organizations should implement monitoring and logging of permission changes and access attempts to critical resources to detect potential exploitation attempts. This vulnerability aligns with CWE-732 and CWE-276 categories related to incorrect permission assignment and inadequate access control, and represents a potential technique under the ATT&CK framework's privilege escalation tactics where adversaries seek to gain higher-level permissions to access restricted resources and maintain persistent access to target systems.
The remediation process should include comprehensive testing of permission controls to verify that all critical resources properly enforce access restrictions and that privilege escalation attempts are properly detected and prevented. Regular security assessments should be conducted to identify similar permission-related vulnerabilities throughout the application's codebase. Implementation of automated permission validation checks and regular access control reviews should be integrated into the organization's security operations to prevent similar issues from emerging in the future. Organizations should also consider implementing multi-factor authentication and additional security controls to provide defense-in-depth against potential exploitation attempts targeting this vulnerability.