Executive brief
Dell Update Package (DUP) Framework is a system update tool used to deploy firmware and driver updates across Dell systems. A high-privileged local attacker can exploit a symlink-following flaw to write to arbitrary filesystem locations, potentially compromising system integrity or enabling privilege escalation chains. This requires administrator-level access but could allow an attacker to modify critical system files.
Technical details
The vulnerability is an improper link resolution before file access (CWE-367) in Dell Update Package Framework versions prior to 26.07.03. A high-privileged local attacker can exploit this by creating symbolic links in predictable locations that the framework follows without validation, leading to arbitrary filesystem writes. The attack requires high privilege level and has high attack complexity, but can result in arbitrary file modification. The vulnerability affects all versions before 26.07.03; patched versions are available at 26.07.03 or later.
Affected products
- Dell Update Package (DUP) Framework prior to 26.07.03
Timeline
- 2026-09-16: disclosed
- 2026-09-16: patched: Version 26.07.03 or later