A significant security flaw has been identified in the IDrive Cloud Backup Client for Windows, which could allow attackers to escalate their privileges. This vulnerability, known as CVE-2026-1995, impacts versions 7.0.0.63 and earlier of the software.
Discovery and Impact
Security experts from FRSecure have pinpointed this flaw due to weak permission setups in the application’s directory. These vulnerabilities can lead to unauthorized system access. Specifically, the flaw permits authenticated users to execute harmful code with elevated NT AUTHORITYSYSTEM privileges.
The vendor is currently working on a patch to address this security issue, but no official fix has been released yet.
Understanding the Vulnerability
The flaw originates from the IDrive Windows client’s operational procedures, particularly the id_service.exe process. This service, crucial for managing cloud backups, operates with elevated system permissions and reads configuration files from the C:ProgramDataIDrive directory.
Due to weak directory permissions, any standard user can alter these files. An attacker with basic access can modify or create files, directing them to malicious scripts. Consequently, when the service accesses these files, it unknowingly executes the attacker’s code with full system privileges.
Security Risks and Mitigation
Exploiting this vulnerability allows attackers to bypass typical Windows security measures, escalating their access to an administrator level. This access enables them to deploy malware, extract sensitive data, and disable security features. The threat is particularly concerning in shared environments or attack scenarios where initial access has been gained.
Until an official patch is available, organizations should implement manual security measures. This includes restricting write permissions for standard users in the affected directory and using endpoint detection tools to monitor unauthorized changes. Administrators should be vigilant for unusual child processes generated by the main service executable and apply updates as they become available.
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