Pyrus Sync — security advisory

{
  "id": "4c53d44cb41c3358e13f722d99cddc130bf6ccae231a918514d299d3806a4e1a",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-116596",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-116596",
    "summary": "Pyrus Sync for Windows contains a local privilege escalation vulnerability caused by missing authorization controls in its PyrusSyncService Windows service, which allow an attacker with unprivileged access to create files using the ISyncService contract.",
    "evidence": "cve:CVE-2026-116596",
    "products": [
      {
        "name": {
          "value": "Pyrus Sync",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-116596",
      "aliases": [
        "CVE-2026-116596"
      ],
      "metrics": [],
      "affected": [
        {
          "vendor": "Pyrus",
          "product": "Pyrus Sync",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "1.8.745.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "modified": "2026-10-26T16:17:29.178Z",
      "provider": "cve",
      "references": [
        "https://pyrus.com/en/pyrus-sync",
        "https://medium.com/@alisaifeldin/cve-2026-116596-local-privilege-escalation-in-pyrus-sync-for-windows-0fe2417dc8cf"
      ],
      "provider_metadata": {
        "cna": {
          "orgId": "37e5125f-f79b-445b-8fad-9564f167944b",
          "shortName": "certcc",
          "dateUpdated": "2026-10-26T16:17:29.178Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-116596",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-cve",
  "document_id": 318577,
  "published_at": "2026-10-26T16:17:29.178+00:00"
}