CVE-2026-92374

Full vulnerability record from the local CVENow database.

Description

A time-of-check time-of-use (TOCTOU) race condition combined with improper symbolic link handling in the privileged helper of TeamViewer Full Client and Host prior to version 15.83 for macOS allows a local attacker with low privileges to bypass installer package verification and install a malicious package. Successful exploitation can lead to local privilege escalation to root.

Severity

HIGH

CVSS score

7.8 (v3.1)

Vulnerability status

Awaiting Analysis

Source identifier

[email protected]

Published

2026-10-27 16:17:31.873000

Last modified

2026-10-28 14:45:23.073000

View original CVE JSON

{
  "id": "CVE-2026-92374",
  "sourceIdentifier": "[email protected]",
  "published": "2026-10-27T16:17:31.873",
  "lastModified": "2026-10-28T14:45:23.073",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A time-of-check time-of-use (TOCTOU) race condition combined with improper symbolic link handling in the privileged helper of TeamViewer Full Client and Host prior to version 15.83 for macOS allows a local attacker with low privileges to bypass installer package verification and install a malicious package. Successful exploitation can lead to local privilege escalation to root."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "TeamViewer",
          "product": "Full Client",
          "defaultStatus": "unaffected",
          "platforms": [
            "MacOS"
          ],
          "versions": [
            {
              "version": "0",
              "lessThan": "15.83",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "14.7.0",
              "lessThan": "14.7.48868",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "13.2.0",
              "lessThan": "13.2.154007",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "TeamViewer",
          "product": "Host",
          "defaultStatus": "unaffected",
          "platforms": [
            "MacOS"
          ],
          "versions": [
            {
              "version": "0",
              "lessThan": "15.83",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "14.7.0",
              "lessThan": "14.7.48868",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "13.2.0",
              "lessThan": "13.2.154007",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1011/",
      "source": "[email protected]"
    }
  ]
}