CVE-2026-16157
HighCVSS 7.8Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
Duplicati v2.3.0.1 grants Authenticated Users MODIFY permissions that propagate to all subdirectories. Installing outside Program Files or on a custom path creates a LocalSystem service running from a writable directory. A standard local user can overwrite any DLL in the service directory, leading to arbitrary code execution as SYSTEM on service restart.
Risk Assessment
Privilege escalation to SYSTEM by a standard local user, potentially leading to full system compromise and data access.
Recommendation
Install Duplicati in the default Program Files directory or restrict permissions on the service directory to prevent write access by standard users. Consider updating to a newer version.
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Original NVD description (English source)
Duplicati v2.3.0.1 backup software gives Authenticated Users MODIFY permissions that propagate to all subdirectories. Installing the software outside of the Program Files directory, or on a custom path, creates a LocalSystem service running from a directory that any standard local user can write to. A standard local user can overwrite any DLL in the service directory. On service restart, the OS loads the attacker's DLL before any managed code runs, executing arbitrary code as SYSTEM.