{"id":"CVE-2026-16157","state":"PUBLISHED","title":"Duplicati backup software v2.3.0.1 is vulnerable to an incorrect permission assignment vulnerability","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.","publishedAt":"2026-07-22T17:29:25.278Z","updatedAt":"2026-07-27T17:03:37.752Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"certcc","products":["Duplicati Duplicati"],"affected":[{"vendor":"Duplicati","product":"Duplicati","versions":[{"version":"2.3.0.1","status":"affected"}]}],"references":["https://kb.cert.org/vuls/id/847406","https://www.kb.cert.org/vuls/id/847406"],"weaknesses":["CWE-732"],"ingestedAt":"2026-10-29T20:11:00.674Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/16xxx/CVE-2026-16157.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16157","state":"PUBLISHED","datePublished":"2026-07-22T17:29:25.278Z","dateUpdated":"2026-07-27T17:03:37.752Z","assignerShortName":"certcc","assignerOrgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateReserved":"2026-07-17T19:45:55.953Z"},"containers":{"cna":{"title":"Duplicati backup software v2.3.0.1 is vulnerable to an incorrect permission assignment vulnerability","descriptions":[{"lang":"en","value":"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":[{"vendor":"Duplicati","product":"Duplicati","versions":[{"version":"2.3.0.1","status":"affected"}]}],"references":[{"url":"https://kb.cert.org/vuls/id/847406"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-732: Incorrect Permission Assignment for Critical Resource"}]}],"providerMetadata":{"shortName":"certcc","orgId":"37e5125f-f79b-445b-8fad-9564f167944b","dateUpdated":"2026-07-22T17:29:25.278Z"},"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"VINCE 3.0.43","env":"prod","origin":"https://cveawg.mitre.org/api/cve/CVE-2026-16157"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.kb.cert.org/vuls/id/847406"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-07-22T18:25:41.589Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":7.8,"attackVector":"LOCAL","baseSeverity":"HIGH","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-27T17:03:33.187898Z","id":"CVE-2026-16157","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-732","type":"CWE","lang":"en","description":"CWE-732 Incorrect Permission Assignment for Critical Resource"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-27T17:03:37.752Z"}}]}}}