{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "lang": "en-US",
    "publisher": {
      "category": "coordinator",
      "contact_details": "https://www.cisa.gov/report",
      "issuing_authority": "CISA",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "title": "Maono Link local privilege escalation",
    "tracking": {
      "current_release_date": "2026-09-08T18:36:54Z",
      "generator": {
        "engine": {
          "name": "VINCE-NT",
          "version": "1.15.0+build.116"
        }
      },
      "id": "VA-26-251-01",
      "initial_release_date": "2026-09-08T18:36:54Z",
      "status": "final",
      "version": "1.0.0",
      "revision_history": [
        {
          "number": "1.0.0",
          "summary": "Initial publication",
          "date": "2026-09-08T18:36:54Z"
        }
      ]
    },
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "notes": [
      {
        "text": "All information products included in [https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white](https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white) are provided \\\"as is\\\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see [https://us-cert.cisa.gov/tlp/](https://us-cert.cisa.gov/tlp/).",
        "title": "Legal Notice",
        "category": "legal_disclaimer"
      },
      {
        "text": "Worldwide",
        "title": "Countries and Areas Deployed",
        "category": "other"
      },
      {
        "text": "Information Technology",
        "title": "Critical Infrastructure Sectors",
        "category": "other"
      },
      {
        "text": "Maono Link 3.8.13 MaonoAiServices Windows service allows local privilege escalation for a standard user account via improper write privileges in 'C:\\ProgramData\\Maono'.",
        "title": "Risk Evaluation",
        "category": "summary"
      },
      {
        "text": "Update to 4.0.80.",
        "title": "Recommended Practices",
        "category": "general"
      },
      {
        "text": "China",
        "title": "Company Headquarters Location",
        "category": "other"
      }
    ],
    "references": [
      {
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-251-01.json",
        "summary": "Vulnerability Advisory VA-26-251-01 CSAF",
        "category": "self"
      }
    ]
  },
  "product_tree": {
    "branches": [
      {
        "category": "vendor",
        "name": "Maono",
        "branches": [
          {
            "category": "product_name",
            "name": "Maono Link",
            "branches": [
              {
                "category": "product_version_range",
                "name": ">=3.8.13|<4.0.80",
                "product": {
                  "name": "Maono Maono Link >=3.8.13|<4.0.80",
                  "product_id": "CSAFPID-0001"
                }
              },
              {
                "category": "product_version",
                "name": "4.0.80",
                "product": {
                  "name": "Maono Maono Link 4.0.80",
                  "product_id": "CSAFPID-0002"
                }
              }
            ]
          }
        ]
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-77827",
      "cwe": {
        "id": "CWE-428",
        "name": "Unquoted Search Path or Element"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Maono Link 3.8.13 MaonoAiServices Windows service allows local privilege escalation for a standard user account via improper write privileges in 'C:\\ProgramData\\Maono'. Fixed in 4.0.80.",
          "title": "Description"
        },
        {
          "category": "details",
          "title": "SSVC",
          "text": "SSVCv2/E:P/A:N/T:T/2026-08-10T14:41:12Z/"
        }
      ],
      "title": "Maono Link local privilege escalation",
      "product_status": {
        "known_affected": [
          "CSAFPID-0001"
        ],
        "fixed": [
          "CSAFPID-0002"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "www.maono.com",
          "url": "https://www.maono.com/products/maono-link-software"
        },
        {
          "category": "external",
          "summary": "CVE-2026-77827",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-77827"
        },
        {
          "category": "external",
          "summary": "VA-26-251-01 CSAF",
          "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-251-01.json"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "Fixed in 4.0.80.",
          "url": "https://www.maono.com/products/maono-link-software",
          "product_ids": [
            "CSAFPID-0001"
          ],
          "date": "2026-09-04T00:00:00Z"
        },
        {
          "category": "vendor_fix",
          "details": "Fixed in 4.0.80.",
          "url": "https://www.maono.com/products/maono-link-software",
          "product_ids": [
            "CSAFPID-0002"
          ],
          "date": "2026-09-04T00:00:00Z"
        }
      ],
      "acknowledgments": [
        {
          "names": [
            "Shravan Kumar Sheri"
          ]
        }
      ],
      "release_date": "2026-09-05T00:00:00Z"
    }
  ]
}