CVE-2026-68866 in PowerProtect Data Domain
Summary
by MITRE • 10/27/2026
PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.7, LTS2024 release versions 7.13.1.0 through 7.13.1.70, LTS2025 release versions 8.3.1.0 through 8.3.1.30, LTS2026 release versions 8.6.1.0 through 8.6.1.10, contain a Relative Path Traversal vulnerability in the certificate. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to Denial of service.
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Analysis
by VulDB Data Team • 10/27/2026
The identified security flaw resides within PowerProtect Data Domain software across multiple release tracks including Feature Releases 7.7.1.0 through 8.7 and Long Term Support releases for the years 2024, 2025, and 2026. This vulnerability is classified as a Relative Path Traversal issue specifically affecting the certificate handling mechanisms of the system. The core technical deficiency involves an insufficient validation of file paths during the processing or management of digital certificates. When the application processes user-supplied input related to certificate operations, it fails to adequately sanitize relative path references such as dot-dot-slash sequences. This lack of rigorous boundary checking allows a malicious actor to manipulate internal directory structures by traversing upwards from the intended working directory into parent directories where sensitive system files or configuration data may reside.
The operational impact of this vulnerability is primarily centered on service availability rather than unauthorized access to confidential data, although the potential for further exploitation exists depending on the specific file types targeted. A high privileged attacker who has already established remote access to the affected environment can leverage this path traversal flaw to overwrite critical system files or corrupt certificate stores. By manipulating these essential components, an adversary can disrupt the normal functioning of the Data Domain services. This manipulation leads directly to a Denial of Service condition where legitimate users are unable to access storage resources, perform backups, or execute recovery operations due to the instability or failure of core authentication and encryption subsystems that rely on valid certificate structures.
From a classification perspective, this vulnerability aligns with Common Weakness Enumeration identifier CWE-22 which defines Improper Limitation of a Pathname to a Restricted Directory. The exploitation technique maps closely to MITRE ATT&CK techniques involving file system manipulation for disruption purposes. While the initial access vector requires high privileges and remote connectivity, indicating that this is not an unauthenticated remote code execution flaw, it represents a significant risk within environments where administrative accounts may be compromised or misconfigured. The ability of a privileged user to degrade service integrity through path traversal underscores the importance of defense-in-depth strategies even for internal threats originating from authorized but malicious actors.
To mitigate this vulnerability, organizations must prioritize immediate patching by upgrading PowerProtect Data Domain software to versions that address these specific certificate handling flaws. EMC has released updates that correct the input validation logic to ensure that relative paths are strictly confined within expected directories and do not allow traversal beyond designated boundaries. In addition to applying vendor-provided patches, administrators should enforce strict least-privilege principles for remote access accounts to minimize the attack surface available to potential insiders or compromised credentials. Regular auditing of administrative actions and monitoring for unusual file system modifications can also aid in early detection of exploitation attempts before they result in service disruption.