CVE-2026-16157

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16157", "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b", "state": "PUBLISHED", "assignerShortName": "certcc", "dateReserved": "2026-07-17T19:45:55.953Z", "datePublished": "2026-07-22T17:29:25.278Z", "dateUpdated": "2026-07-27T17:03:37.752Z"}, "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."}], "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Duplicati", "product": "Duplicati", "versions": [{"status": "affected", "version": "2.3.0.1"}]}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-732: Incorrect Permission Assignment for Critical Resource"}]}], "references": [{"url": "https://kb.cert.org/vuls/id/847406"}], "x_generator": {"engine": "VINCE 3.0.43", "env": "prod", "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-16157"}, "providerMetadata": {"orgId": "37e5125f-f79b-445b-8fad-9564f167944b", "shortName": "certcc", "dateUpdated": "2026-07-22T17:29:25.278Z"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.kb.cert.org/vuls/id/847406"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-07-22T18:25:41.589Z"}}, {"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-732", "lang": "en", "description": "CWE-732 Incorrect Permission Assignment for Critical Resource"}]}], "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"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-27T17:03:37.752Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.kb.cert.org/vuls/id/847406"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "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": {"id": "CVE-2026-16157", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-07-27T17:03:33.187898Z"}}}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-732", "description": "CWE-732 Incorrect Permission Assignment for Critical Resource"}]}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-27T16:59:30.263Z"}}], "cna": {"title": "Duplicati backup software v2.3.0.1 is vulnerable to an incorrect permission assignment vulnerability", "source": {"discovery": "UNKNOWN"}, "affected": [{"vendor": "Duplicati", "product": "Duplicati", "versions": [{"status": "affected", "version": "2.3.0.1"}]}], "references": [{"url": "https://kb.cert.org/vuls/id/847406"}], "x_generator": {"env": "prod", "engine": "VINCE 3.0.43", "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-16157"}, "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-732: Incorrect Permission Assignment for Critical Resource"}]}], "providerMetadata": {"orgId": "37e5125f-f79b-445b-8fad-9564f167944b", "shortName": "certcc", "dateUpdated": "2026-07-22T17:29:25.278Z"}}}, "cveMetadata": {"cveId": "CVE-2026-16157", "state": "PUBLISHED", "dateUpdated": "2026-07-27T17:03:37.752Z", "dateReserved": "2026-07-17T19:45:55.953Z", "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b", "datePublished": "2026-07-22T17:29:25.278Z", "assignerShortName": "certcc"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "Duplicati", "vendor": "Duplicati", "versions": [{"status": "affected", "version": "2.3.0.1"}]}], "source": "cret@cert.org"}], "cveTags": [], "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."}], "id": "CVE-2026-16157", "lastModified": "2026-07-27T18:16:52.640", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16157", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-27T17:03:33.187898Z", "version": "2.0.3"}}]}, "published": "2026-07-22T18:16:55.410", "references": [{"source": "cret@cert.org", "url": "https://kb.cert.org/vuls/id/847406"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://www.kb.cert.org/vuls/id/847406"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-732"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "2.3.0.1"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Duplicati", "source": "cna", "vendor": "Duplicati"}, "product": "duplicati", "vendor": "duplicati"}], "created": "2026-07-23T18:30:13.454597+00:00", "updated": "2026-08-03T23:30:17.195155+00:00", "vendors": ["duplicati", "duplicati$PRODUCT$duplicati"]}