Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Vendor vector accepted as accurate: high privilege gates remote symlink abuse, with confidentiality-only impact and no integrity or availability effect.
Primary rating from Vendor (dell).
CVSS VectorVendor: dell
Lifecycle Timeline
2DescriptionCVE.org
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 improper link resolution before file access ('Link following') vulnerability. A high privileged attacker with remote access could potentially exploit this vulnerability, leading to information disclosure.
AnalysisAI
Symlink-following vulnerability in Dell PowerProtect Data Domain allows a high-privileged remote attacker to traverse outside intended file paths and read arbitrary files, resulting in information disclosure. Multiple version branches are affected, including the current mainstream 8.7 release, LTS2026 builds through 8.6.1.10, LTS2025 builds through 8.3.1.30, and LTS2024 builds through 7.13.1.70. Dell published advisory DSA-2026-278 addressing this issue; no public exploit code or active exploitation has been identified at time of analysis.
Technical ContextAI
CWE-59 (Improper Link Resolution Before File Access, commonly called 'link following') occurs when software dereferences a symbolic link during a file operation without validating that the resolved path remains within an intended directory boundary. In Dell PowerProtect Data Domain - a deduplication storage appliance platform identified by CPE cpe:2.3:a:dell:powerprotect_data_domain - a network-accessible component allows a high-privileged attacker to place or influence a symlink in a writable location. When the vulnerable component later performs a file-access operation following that link, it reads data outside the sanctioned path. This is a path-traversal variant at the OS filesystem layer rather than at the HTTP or application input layer, meaning standard input sanitization controls may not intercept it.
RemediationAI
Apply the patches specified in Dell security advisory DSA-2026-278, available at https://www.dell.com/support/kbdoc/en-us/000481268/dsa-2026-278-security-update-for-dell-powerprotect-data-domain-multiple-vulnerabilities. Consult the advisory directly for the exact remediated build number applicable to your release branch (mainstream, LTS2026, LTS2025, or LTS2024), as specific fixed versions were not independently confirmed in the available intelligence data. As a compensating control pending patch deployment, audit and minimize the number of accounts holding high-privileged access to Data Domain systems, since exploitation strictly requires PR:H credentials; reducing the administrative account surface directly reduces the attacker population that could trigger this flaw. Additionally, review Data Domain audit logs for unexpected file access patterns by privileged accounts. Note that access restriction mitigates risk but does not address the underlying symlink-resolution defect.
More in Powerprotect Data Domain
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Improper authentication in Dell PowerProtect Data Domain (versions 7.7.1.0 through 8.7, plus the LTS2026, LTS2025, and L
Dell PowerProtect Data Domain with Data Domain Operating System (DD OS) versions prior to 8.3.0.15 contain an Insufficie
Dell PowerProtect DD, versions prior to 7.13.0.10, LTS 7.7.5.25, LTS 7.10.1.15, 6.2.1.110 contain an improper access con
Dell PowerProtect DD, versions prior to 7.13.0.10, LTS 7.7.5.25, LTS 7.10.1.15, 6.2.1.110 contain an OS command injectio
OS command injection in Dell PowerProtect Data Domain (versions 7.7.1.0 through 8.7, plus the LTS2026, LTS2025, and LTS2
Arbitrary OS command execution in Dell PowerProtect Data Domain (versions 7.7.1.0 through 8.7, plus the LTS2026, LTS2025
Authenticated OS command injection in Dell PowerProtect Data Domain (versions 7.7.1.0 through 8.7, plus LTS2026 8.6.1.0-
OS command injection in Dell PowerProtect Data Domain (versions 7.7.1.0 through 8.7, plus the LTS2026, LTS2025, and LTS2
Dell PowerProtect DD, versions prior to 7.13.0.10, LTS 7.7.5.25, LTS 7.10.1.15, 6.2.1.110 contain an OS command injectio
OS command injection in Dell PowerProtect Data Domain across four supported release tracks allows a high-privileged loca
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 Information Disclosure
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-41546
GHSA-pv3f-94f6-vhr2