{"id":"CVE-2026-16157","aliases":["EUVD-2026-47761","GHSA-2g48-2hgv-5jpv"],"status":"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.","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.0014,"percentile":0.03397,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-732"],"published":"2026-07-22T17:29:25Z","modified":"2026-07-27T18:32:42Z","products":[{"vendor":"duplicati","product":"duplicati"}],"references":[{"url":"https://kb.cert.org/vuls/id/847406"},{"url":"https://www.kb.cert.org/vuls/id/847406"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16157"},{"url":"https://github.com/advisories/GHSA-2g48-2hgv-5jpv"}],"sources":{"cve":[{"id":"CVE-2026-16157","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.","status":"published","published":"2026-07-22T17:29:25.278Z","modified":"2026-07-27T17:03:37.752Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"adp"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:20:10.870108Z"}],"euvd":[{"id":"EUVD-2026-47761","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.","status":"published","published":"2026-07-22T17:29:25Z","modified":"2026-07-27T17:03:37Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T18:02:33.886037Z"}],"ghsa":[{"id":"GHSA-2g48-2hgv-5jpv","title":"Duplicati v2.3.0.1 backup software gives Authenticated Users MODIFY permissions that propagate to...","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.","status":"published","published":"2026-07-22T18:32:40Z","modified":"2026-07-27T18:32:42Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T15:09:51.407039Z"}],"nvd":[{"id":"CVE-2026-16157","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.","status":"published","published":"2026-07-22T18:16:55.41Z","modified":"2026-07-27T18:16:52.64Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-732"],"updated_at":"2026-11-02T14:12:32.089897Z"}]}}