Path Traversal in Dell PowerProtect Data Domain v7.7-8.8
CVE-2026-86398 Published on October 28, 2026
Dell PowerProtect Data Domain, Feature Release versions 7.7.1.0 through 8.8, LTS2024 release versions 7.13.1.0 through 7.13.1.80, LTS2025 release versions 8.3.1.0 through 8.3.1.40, LTS2026 release versions 8.6.1.0 through 8.6.1.20, contain an Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to filesystem access for attacker.
Vulnerability Analysis
CVE-2026-86398 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-86398 has been classified to as a Directory traversal vulnerability or weakness.
Affected Versions
Dell PowerProtect Data Domain:- Before 8.9.0.0 or later is affected.
- Before 7.13.1.90 or later is affected.
- Before 8.3.1.50 or later is affected.
- Before 8.6.1.30 or later is affected.