Duplicati backup software v2.3.0.1 is vulnerable to an incorrect permission assignment vulnerability

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-16157
StatePUBLISHED
Assignercertcc
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-22 18:16:55 UTC
Updated2026-07-22 20:54:47 UTC
DescriptionDuplicati 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.

Risk And Classification

Problem Types: CWE-732: Incorrect Permission Assignment for Critical Resource

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Duplicati Duplicati affected 2.3.0.1 Not specified

References

ReferenceSourceLinkTags
www.kb.cert.org/vuls/id/847406 af854a3a-2127-422b-91ae-364da2661108 www.kb.cert.org
kb.cert.org/vuls/id/847406 [email protected] kb.cert.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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