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CVE-2026-76159— Duplicati for Windows - Incorrect Permission Assignment for Critical Resource

Quick assessment

Affected
Duplicati Duplicati
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Duplicati for Windows v2.4.0.0 之前的版本中，其配置加载器对关键资源存在不正确的权限分配问题。这使得本地低权限攻击者能够通过一个由攻击者控制的 文件，将权限提升至 （系统权限）。

CVSS 7.0 · High EPSS 0.10% · P1

Affected Version Matrix 1

VendorProduct Version RangeStatus
Duplicati Duplicati < v2.4.0.0 affected
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I. Basic Information for CVE-2026-76159

Vulnerability Information
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Vulnerability Title
Duplicati for Windows - Incorrect Permission Assignment for Critical Resource
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Duplicati Duplicati 0 ~ v2.4.0.0 -

II. Public POCs for CVE-2026-76159

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III. Intelligence Information for CVE-2026-76159

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Vendor Advisories for CVE-2026-76159 (1)

IV. Related Vulnerabilities

Same product: Duplicati
Same vendor: Duplicati
Same weakness: CWE-732

V. Comments for CVE-2026-76159

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