CVE-2026-20975 in Cloud
Summary
by MITRE • 01/09/2026
Improper handling of insufficient permission in Samsung Cloud prior to version 5.6.11 allows local attackers to access specific files in arbitrary path.
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Analysis
by VulDB Data Team • 01/16/2026
The vulnerability identified as CVE-2026-20975 represents a critical permission handling flaw within Samsung Cloud services that affects versions prior to 5.6.11. This issue stems from inadequate validation of file access permissions, creating a pathway for local attackers to bypass normal security controls and access sensitive data stored in arbitrary file paths. The flaw exists in the core file system access mechanisms that govern how Samsung Cloud manages user permissions and file visibility across different directories and storage locations.
From a technical perspective, the vulnerability manifests as a failure in the permission validation logic that should normally restrict file access based on user credentials and security contexts. Attackers with local system access can exploit this weakness to traverse file system boundaries and retrieve files that should normally be restricted to specific users or groups. The improper handling occurs during file access operations where the system fails to properly verify that the requesting entity has adequate privileges to access the target file path, allowing for privilege escalation through directory traversal techniques.
The operational impact of this vulnerability extends beyond simple unauthorized data access, as it creates potential for lateral movement within affected systems and could enable attackers to gather sensitive information that might be used for further exploitation. Local attackers who can execute code on the target system can leverage this flaw to access configuration files, user data, or other sensitive resources stored in various locations within the Samsung Cloud environment. This vulnerability particularly affects enterprise environments where Samsung Cloud services are used for data synchronization and storage, potentially exposing corporate data to unauthorized access.
Security professionals should note that this vulnerability aligns with CWE-284, which addresses improper access control issues in software systems, and represents a classic example of insufficient privilege checking in file system operations. The ATT&CK framework would categorize this as a privilege escalation technique under the T1068 category, where attackers leverage system weaknesses to gain elevated access rights. Organizations should implement immediate mitigations including updating to Samsung Cloud version 5.6.11 or later, conducting thorough access control audits, and monitoring for unauthorized file access attempts. Additional protective measures such as implementing mandatory access controls, regular permission reviews, and enhanced logging of file system operations can help reduce the attack surface and prevent exploitation of this vulnerability.