Unrated severityNVD Advisory· Published Jul 22, 2026· Updated Jul 27, 2026
Duplicati backup software v2.3.0.1 is vulnerable to an incorrect permission assignment vulnerability
CVE-2026-16157
Description
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.
Affected products
1- Range: = 2.3.0.1
Patches
Vulnerability mechanics
References
1News mentions
1- ⚡ Weekly Recap: Rogue AI Agents, Check Point Exploit, Slopsquatting, ClickFix Lures and MoreThe Hacker News · Jul 27, 2026