CVE-2026-76159: Duplicati

High severity, CVSS 7.0. EPSS: 0.1% chance of exploitation in the next 30 days.

Incorrect Permission Assignment for Critical Resource in the configuration loader of Duplicati for Windows versions before v2.4.0.0 allows a local low-privileged attacker to escalate privileges to NT AUTHORITY\SYSTEM via an attacker-controlled preload.json file.

Affected products

• Duplicati Duplicati: before v2.4.0.0 (fixed in v2.4.0.0)

Published 2026-09-15. Last modified 2026-09-16.