CVE-2026-76159 PUBLISHED

Duplicati for Windows - Incorrect Permission Assignment for Critical Resource

Assigner: ZUSO ART
Reserved: 19.08.2026 Published: 15.09.2026 Updated: 15.09.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 7

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	Low
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	Duplicati
Product	Duplicati
Versions	Default: unaffected affected from 0 to v2.4.0.0 (excl.)

References

https://zuso.ai/advisory/

Problem Types

CWE-732: Incorrect Permission Assignment for Critical Resource CWE