CVE-2025-63822 in SirenGPS
Summary
by MITRE • 08/06/2026
SirenGPS Android Application 2.19.44 is vulnerable to Incorrect Access Control. An authenticated attacker can manipulate user identifier parameters to bypass authorization controls and gain unauthorized READ and WRITE access to other users' personal information. The API fails to validate that the requesting user is authorized to access the target user's data.
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Analysis
by VulDB Data Team • 08/06/2026
The SirenGPS Android application version 2.19.44 contains a critical access control vulnerability that allows authenticated attackers to manipulate user identifier parameters and gain unauthorized access to other users' personal information. This vulnerability represents a fundamental failure in the application's authorization mechanisms, where the system does not properly validate whether the requesting user has legitimate permission to access specific data resources. The flaw exists within the application's API layer where user identifiers are passed as parameters without proper validation of the authenticated user's privileges.
This vulnerability stems from inadequate input validation and insufficient authorization checks within the application's backend services. When an authenticated user makes API requests, the system accepts user identifier parameters directly from the client without performing proper access control verification. The attacker can simply modify these parameters to reference another user's account and gain READ and WRITE access to their personal information. This type of vulnerability is classified as CWE-285 - Improper Authorization, which specifically addresses scenarios where systems fail to properly enforce access controls for authenticated users.
The operational impact of this vulnerability is severe and far-reaching within the context of mobile application security and privacy protection. An attacker with valid credentials can exploit this flaw to access sensitive personal data belonging to other users, potentially including location information, contact details, communication history, and other personally identifiable information. This unauthorized access capability directly violates the principle of least privilege and demonstrates a complete breakdown in the application's data protection mechanisms. The vulnerability affects not only individual user privacy but also raises concerns about potential data breaches and compliance violations with data protection regulations such as gdpr and ccpa.
From an attack perspective, this vulnerability aligns with several techniques documented in the mitre att&ck framework under the privilege escalation and credential access domains. Attackers can leverage this flaw to perform lateral movement within the application's user base without requiring additional authentication mechanisms or exploiting other vulnerabilities. The exploitation process is straightforward and requires minimal technical expertise since it involves simple parameter manipulation. This makes the vulnerability particularly dangerous as it can be easily exploited by both sophisticated attackers and less technically skilled threat actors.
The recommended mitigation strategies include implementing robust access control validation at every API endpoint where user identifiers are processed, ensuring that each request properly verifies the authenticated user's authorization to access the specified resource. The application should enforce strict input validation and sanitize all user identifier parameters before processing them. Additionally, developers should implement proper session management and ensure that access tokens contain sufficient information to validate user privileges. Regular security testing including penetration testing and code reviews should be conducted to identify similar vulnerabilities in other parts of the application's architecture. The fix should also include logging and monitoring capabilities to detect unauthorized access attempts and provide audit trails for security investigations.
This vulnerability highlights the critical importance of proper authorization implementation in mobile applications, particularly those handling sensitive user data. It demonstrates how a single missing validation check can completely undermine an application's security posture and expose users to significant privacy risks. Organizations should prioritize implementing comprehensive access control mechanisms and conducting regular security assessments to prevent similar issues from occurring in their mobile applications. The remediation process requires not only fixing the immediate vulnerability but also establishing proper security practices throughout the development lifecycle to prevent future occurrences of similar access control failures.