CVE-2026-56085 in PowerProtect Data Domain
Summary
by MITRE • 07/03/2026
Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.7, LTS2026 release version 8.6.1.0 through 8.6.1.10, LTS2025 release version 8.3.1.0 through 8.3.1.30, LTS2024 release versions 7.13.1.0 through 7.13.1.70 contain an use of uninitialized resource vulnerability. A low privileged attacker with local access could potentially exploit this vulnerability, leading to information exposure.
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Analysis
by VulDB Data Team • 07/04/2026
The Dell PowerProtect Data Domain systems represent critical infrastructure components for data protection and backup operations within enterprise environments. These appliances serve as centralized repositories for backup data, archival storage, and disaster recovery solutions across various organizational domains. The affected versions span multiple release streams including LTS2026, LTS2025, and LTS2024 support cycles, indicating this vulnerability has persisted across several maintenance releases and long-term support periods. This widespread impact suggests the flaw exists at a fundamental level within the system's resource management mechanisms.
The vulnerability manifests as an uninitialized resource usage issue classified under CWE-457, which represents a specific weakness in the software's memory management and initialization processes. When the system handles certain operational tasks or processes user requests, it fails to properly initialize critical data structures or memory regions before utilizing them. This particular flaw operates at the system level where local access is required, meaning attackers must already have legitimate credentials or physical access to the device to attempt exploitation. The low privilege requirement indicates this vulnerability could be leveraged by users with minimal system permissions rather than requiring administrative privileges.
The operational impact of this vulnerability extends beyond simple information exposure, as it represents a potential vector for more sophisticated attacks within the system's operational environment. When uninitialized resources are accessed, they may contain residual data from previous operations or memory contents that were not properly cleared. This information exposure could potentially reveal sensitive system details, configuration parameters, or even fragments of user data that may aid in further exploitation attempts. The vulnerability's presence in multiple LTS versions suggests it has been present for an extended period without proper remediation.
Security professionals should consider this vulnerability within the context of the ATT&CK framework's privilege escalation and credential access tactics, as local access combined with information exposure creates opportunities for attackers to gather intelligence about system configurations and operational parameters. Organizations utilizing these Data Domain appliances should prioritize immediate patching or mitigation strategies, particularly in environments where physical security controls may be insufficient or where insider threat risks exist. The vulnerability's classification as a use of uninitialized resource aligns with common software security weaknesses that typically require careful memory management practices during development phases.
The persistence of this issue across multiple release versions indicates either inadequate testing procedures during development cycles or delayed recognition of the severity level by the vendor. System administrators should implement monitoring for unauthorized local access attempts and consider conducting comprehensive security assessments of their Data Domain implementations. Additionally, organizations should review their access control policies to ensure that local system access is properly restricted and audited, as this vulnerability specifically requires local access to exploit effectively.