Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Local-only attack vector and high-privilege requirement confirmed by description; confidentiality-only impact because link following enables unauthorized file reads with no write or availability consequence.
Primary rating from Vendor (dell).
CVSS VectorVendor: dell
Lifecycle Timeline
2DescriptionCVE.org
Dell PowerProtect Data Domain, versions 7.7.1.0 through 8.6, 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 improper link resolution before file access ('link following') vulnerability. A high privileged attacker with local access could potentially exploit this vulnerability, leading to unauthorized access.
AnalysisAI
Link-following exploitation in Dell PowerProtect Data Domain enables a high-privileged local attacker to read files outside their intended access scope by manipulating symbolic or hard links before file access operations resolve. Affected across multiple release trains - mainline 7.7.1.0 through 8.6, LTS2026 8.6.1.10 and below, LTS2025 8.3.1.30 and below, and LTS2024 7.13.1.70 and below. No public exploit code or active exploitation confirmed at time of analysis; risk is bounded by the requirement for pre-existing high-privilege local access.
Technical ContextAI
CWE-59 (Improper Link Resolution Before File Access, or 'link following') describes a class of vulnerability where software follows a symbolic or hard link to a path the attacker controls before the file operation is validated against an intended scope. In the Dell PowerProtect Data Domain context (CPE: cpe:2.3:a:dell:powerprotect_data_domain:*:*:*:*:*:*:*:*), an internal process or privileged utility performs file access without adequately canonicalizing the path, allowing a symlink placed by a high-privileged local account to redirect that access to an otherwise unauthorized file. This is a classic TOCTOU-adjacent pattern common in backup and storage management software, where privileged daemons traverse filesystem paths during backup catalog or management operations.
RemediationAI
Apply the Dell-released security updates documented in advisory DSA-2026-278 (https://www.dell.com/support/kbdoc/en-us/000481268/dsa-2026-278-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities). Exact patched versions are not independently derivable from the provided data beyond the affected-version ranges; consult the advisory directly for target upgrade versions per branch (mainline, LTS2024, LTS2025, LTS2026). As a compensating control where immediate patching is not possible, restrict local shell or management-plane access to Data Domain appliances to only the minimum required administrative accounts, and audit which accounts hold high-privilege roles - this directly addresses the PR:H prerequisite. Note that restricting administrative access may impact legitimate backup orchestration workflows that rely on local privileged operations; validate against your backup automation before applying access controls.
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Dell PowerProtect Data Domain versions 7.7.1.0 through 8.7.0.0 and specific LTS releases (8.3.1.0-8.3.1.20, 7.13.1.0-7.1
Same weakness CWE-59 – Improper Link Resolution Before File Access
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41532
GHSA-72f3-wx74-78wc