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CVE-2026-54424

Full vulnerability record from the local CVENow database.

Description

An Incorrect Use of Privileged APIs vulnerability in Unity Parsec on Windows hosts leads to a potential Elevation of Privilege. This issue affects Parsec through v2026-05-04.0. The patched version is Parsec for Windows version 150-104a. A user can generate a situation where there is an instance of parsecd.exe running as NT AUTHORITY\SYSTEM with a user-controlled value of the AppData environment variable.

Severity
HIGH
CVSS score
8.4 (v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-07-04 01:16:27.340000
Last modified
2026-10-25 15:10:00.147000
View original CVE JSON
{
  "id": "CVE-2026-54424",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-04T01:16:27.340",
  "lastModified": "2026-10-25T15:10:00.147",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An Incorrect Use of Privileged APIs vulnerability in Unity Parsec on Windows hosts leads to a potential Elevation of Privilege. This issue affects Parsec through v2026-05-04.0. The patched version is Parsec for Windows version 150-104a. A user can generate a situation where there is an instance of parsecd.exe running as NT AUTHORITY\\SYSTEM with a user-controlled value of the AppData environment variable."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de uso incorrecto de APIs privilegiadas en Unity Parsec en hosts de Windows conduce a una potencial Elevación de Privilegios. Este problema afecta a Parsec hasta la v2026-05-04.0. La versión parcheada es Parsec para Windows versión 150-104a. Un usuario puede generar una situación en la que hay una instancia de parsecd.exe ejecutándose como NT AUTHORITY\\SYSTEM con un valor controlado por el usuario de la variable de entorno AppData."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Unity",
          "product": "Parsec",
          "defaultStatus": "unaffected",
          "platforms": [
            "Windows"
          ],
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "v2026-05-04.0",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 8.4,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.9
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-06T15:34:43.819706Z",
          "id": "CVE-2026-54424",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-648"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/tomadimitrie/CVE-2026-54424",
      "source": "[email protected]"
    },
    {
      "url": "https://parsec.app/",
      "source": "[email protected]"
    },
    {
      "url": "https://support.parsec.app/hc/en-us/articles/50612943726612-CVE-2026-54424",
      "source": "[email protected]"
    },
    {
      "url": "https://www.tomadimitrie.dev/blog/CVE-2026-54424",
      "source": "[email protected]"
    }
  ]
}