RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection

{
  "id": "99bc92266711234fc9944547dd195ab827b6105cab33ce2cf732b8c159c9e615",
  "url": "https://osv.dev/vulnerability/CVE-2026-57850",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "RustDesk Missing Session Scope Enforcement Allows Out-of-Scope Control Message Injection",
    "summary": "RustDesk before 1.4.9 does not enforce a session's authorized connection scope on the server side, so a peer granted a limited session type (FileTransfer, PortForward, ViewCamera, or Terminal) can send control messages and login options reserved for a full Remote session. An authenticated remote peer can exploit this missing scope check to act outside its granted scope, injecting out-of-scope control messages to observe and control the host beyond the permissions it was given.",
    "evidence": "osv:CVE-2026-57850",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-57850",
      "aliases": [
        "CVE-2026-57850"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/rustdesk/rustdesk",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6c578292e8ebbbec708b76986ba8c4bc7c509747"
                },
                {
                  "fixed": "493b14ba78abc3dfb33f109c7f93c1c95a1dabc4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.4.9"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "493b14ba78abc3dfb33f109c7f93c1c95a1dabc4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "6c578292e8ebbbec708b76986ba8c4bc7c509747"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "1.4.9"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.4.8",
            "1.4.7",
            "1.4.6",
            "nightly",
            "1.4.5",
            "1.4.4",
            "1.4.3",
            "1.4.2",
            "1.4.1",
            "1.4.0",
            "1.3.9",
            "1.3.8",
            "1.3.7",
            "1.3.6",
            "1.3.5",
            "1.3.4",
            "1.3.3",
            "1.3.2",
            "1.3.1",
            "1.3.0",
            "1.2.7",
            "1.2.6",
            "1.2.5",
            "fdroid-version",
            "1.2.4",
            "1.2.3-2",
            "1.2.3-1",
            "1.2.3",
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.9",
            "1.1.8",
            "1.1.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-57850.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:50.101188984Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57850.json",
        "https://github.com/rustdesk/rustdesk/releases/tag/1.4.9",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-57850",
        "https://www.vulncheck.com/advisories/rustdesk-missing-session-scope-enforcement-allows-out-of-scope-control-message-injection",
        "https://github.com/rustdesk/rustdesk/commit/493b14ba78abc3dfb33f109c7f93c1c95a1dabc4",
        "https://github.com/rustdesk/rustdesk/pull/15469",
        "https://github.com/rustdesk/rustdesk",
        "https://github.com/sn0x-sharma/CVE-2026-57850"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/57xxx/CVE-2026-57850.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-57850",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518441,
  "published_at": "2026-07-10T19:53:21.336+00:00"
}