CVE-2026-76159 Duplicati for Windows - Incorrect Permission Assignment for Critical Resource
A local low-privileged attacker can escalate privileges to SYSTEM by exploiting incorrect permissions in the configuration loader of Duplicati for Windows.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-76159?
CVE-2026-76159 is a high-severity vulnerability in Duplicati, published on 15 Sep 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-732
Which versions are affected by CVE-2026-76159?
How do I fix CVE-2026-76159?
No fix has been published for CVE-2026-76159 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-76159 being exploited?
There is no known exploitation of CVE-2026-76159 in the wild and no public exploit code.
Sources
Also known as GHSA-8x3r-pmm8-3j9w.