Vulnerability-Lookup

GHSA-2G48-2HGV-5JPV

Vulnerability from github – Published: 2026-07-22 18:32 – Updated: 2026-07-22 21:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-16157"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-22T18:16:55Z",
    "severity": null
  },
  "details": "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\u0027s DLL before any managed code runs, executing arbitrary code as SYSTEM.",
  "id": "GHSA-2g48-2hgv-5jpv",
  "modified": "2026-07-22T21:32:04Z",
  "published": "2026-07-22T18:32:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16157"
    },
    {
      "type": "WEB",
      "url": "https://kb.cert.org/vuls/id/847406"
    },
    {
      "type": "WEB",
      "url": "https://www.kb.cert.org/vuls/id/847406"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-16157 (GCVE-0-2026-16157)

Vulnerability from cvelistv5 – Published: 2026-07-22 17:29 – Updated: 2026-07-22 18:25

Title

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

Summary

Severity

No CVSS data available.

CWE

CWE-732 - Incorrect Permission Assignment for Critical Resource

Assigner

certcc

References

2 references

URL	Tags
https://kb.cert.org/vuls/id/847406
https://www.kb.cert.org/vuls/id/847406

Impacted products

1 product

Vendor	Product	Version
Duplicati	Duplicati	Affected: 2.3.0.1

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JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-07-22T18:25:41.589Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.kb.cert.org/vuls/id/847406"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Duplicati",
          "vendor": "Duplicati",
          "versions": [
            {
              "status": "affected",
              "version": "2.3.0.1"
            }
          ]
        }
      ],
      "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\u0027s DLL before any managed code runs, executing arbitrary code as SYSTEM."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-732: Incorrect Permission Assignment for Critical Resource",
              "lang": "en"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-22T17:29:25.278Z",
        "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
        "shortName": "certcc"
      },
      "references": [
        {
          "url": "https://kb.cert.org/vuls/id/847406"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Duplicati backup software v2.3.0.1 is vulnerable to an incorrect permission assignment vulnerability",
      "x_generator": {
        "engine": "VINCE 3.0.43",
        "env": "prod",
        "origin": "https://cveawg.mitre.org/api/cve/CVE-2026-16157"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "37e5125f-f79b-445b-8fad-9564f167944b",
    "assignerShortName": "certcc",
    "cveId": "CVE-2026-16157",
    "datePublished": "2026-07-22T17:29:25.278Z",
    "dateReserved": "2026-07-17T19:45:55.953Z",
    "dateUpdated": "2026-07-22T18:25:41.589Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.

Action not permitted

GHSA-2G48-2HGV-5JPV

CVE-2026-16157 (GCVE-0-2026-16157)

Tags

Sightings

Nomenclature