{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-92369", "assignerOrgId": "13430f76-86eb-43b2-a71c-82c956ef31b6", "state": "PUBLISHED", "assignerShortName": "TV", "dateReserved": "2026-09-16T07:16:01.956Z", "datePublished": "2026-09-29T15:39:53.082Z", "dateUpdated": "2026-09-29T15:39:53.082Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "13430f76-86eb-43b2-a71c-82c956ef31b6", "shortName": "TV", "dateUpdated": "2026-09-29T15:39:53.082Z"}, "title": "Time-of-check Time-of-use (TOCTOU) Race Condition in TeamViewer Windows Installer Rollback Mechanism Leads to Local Privilege Escalation", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-367", "description": "CWE-367 Time-of-check time-of-use (TOCTOU) race condition", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-29", "descriptions": [{"lang": "en", "value": "CAPEC-29 Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions"}]}], "affected": [{"vendor": "TeamViewer", "product": "Full Client", "platforms": ["Windows"], "versions": [{"status": "affected", "version": "15.0", "lessThan": "15.82", "versionType": "custom"}, {"status": "affected", "version": "15.64.0 (Legacy Windows 7 & 8)", "lessThan": "15.64.8 (Legacy Windows 7 & 8)", "versionType": "custom"}, {"status": "affected", "version": "14.7.0", "lessThan": "14.7.48855", "versionType": "custom"}, {"status": "affected", "version": "13.2.0", "lessThan": "13.2.36230", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "TeamViewer", "product": "Host", "platforms": ["Windows"], "versions": [{"status": "affected", "version": "15.0", "lessThan": "15.82", "versionType": "custom"}, {"status": "affected", "version": "15.64.0 (Legacy Windows 7 & 8)", "lessThan": "15.64.8 (Legacy Windows 7 & 8)", "versionType": "custom"}, {"status": "affected", "version": "14.7.0", "lessThan": "14.7.48855", "versionType": "custom"}, {"status": "affected", "version": "13.2.0", "lessThan": "13.2.36230", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "TeamViewer Full Client and Host prior to version 15.82 on Windows contain a TOCTOU race condition in the installer rollback mechanism. A local low-privileged attacker can replace rollback backup files stored in a user-writable temporary directory before they are restored by an elevated installer, resulting in privilege escalation to NT AUHORITY/SYSTEM. Exploitation requires successful timing of the race condition and a rollback during installation or update.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "TeamViewer Full Client and Host prior to version 15.82 on Windows contain a TOCTOU race condition in the installer rollback mechanism. A local low-privileged attacker can replace rollback backup files stored in a user-writable temporary directory before they are restored by an elevated installer, resulting in privilege escalation to NT AUHORITY/SYSTEM. Exploitation requires successful timing of the race condition and a rollback during installation or update.  "}]}], "references": [{"url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "LOCAL", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.3, "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"}}], "solutions": [{"lang": "en", "value": "Update to the latest version.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Update to the latest version."}]}], "credits": [{"lang": "en", "value": "We thank Romain Igounet and Hugo Leclercq for the discovery and responsible disclosure.", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Windows"], "product": "Full Client", "vendor": "TeamViewer", "versions": [{"lessThan": "15.82", "status": "affected", "version": "15.0", "versionType": "custom"}, {"lessThan": "15.64.8 (Legacy Windows 7 & 8)", "status": "affected", "version": "15.64.0 (Legacy Windows 7 & 8)", "versionType": "custom"}, {"lessThan": "14.7.48855", "status": "affected", "version": "14.7.0", "versionType": "custom"}, {"lessThan": "13.2.36230", "status": "affected", "version": "13.2.0", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "platforms": ["Windows"], "product": "Host", "vendor": "TeamViewer", "versions": [{"lessThan": "15.82", "status": "affected", "version": "15.0", "versionType": "custom"}, {"lessThan": "15.64.8 (Legacy Windows 7 & 8)", "status": "affected", "version": "15.64.0 (Legacy Windows 7 & 8)", "versionType": "custom"}, {"lessThan": "14.7.48855", "status": "affected", "version": "14.7.0", "versionType": "custom"}, {"lessThan": "13.2.36230", "status": "affected", "version": "13.2.0", "versionType": "custom"}]}], "source": "psirt@teamviewer.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "TeamViewer Full Client and Host prior to version 15.82 on Windows contain a TOCTOU race condition in the installer rollback mechanism. A local low-privileged attacker can replace rollback backup files stored in a user-writable temporary directory before they are restored by an elevated installer, resulting in privilege escalation to NT AUHORITY/SYSTEM. Exploitation requires successful timing of the race condition and a rollback during installation or update."}], "id": "CVE-2026-92369", "lastModified": "2026-09-29T21:35:31.350", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.3, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 5.9, "source": "psirt@teamviewer.com", "type": "Secondary"}]}, "published": "2026-09-29T16:17:14.890", "references": [{"source": "psirt@teamviewer.com", "url": "https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1010/"}], "sourceIdentifier": "psirt@teamviewer.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "psirt@teamviewer.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[15.0,15.82)"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[15.64.0 (Legacy Windows 7 & 8),15.64.8 (Legacy Windows 7 & 8))"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "semver", "value": "[14.7.0,14.7.48855)"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "semver", "value": "[13.2.0,13.2.36230)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Full Client", "source": "cna", "vendor": "TeamViewer"}, "product": "full_client", "vendor": "teamviewer"}, {"configurations": [{"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[15.0,15.82)"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "generic", "value": "[15.64.0 (Legacy Windows 7 & 8),15.64.8 (Legacy Windows 7 & 8))"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "semver", "value": "[14.7.0,14.7.48855)"}}, {"platform": ["windows"], "status": "affected", "versions": {"scheme": "semver", "value": "[13.2.0,13.2.36230)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Host", "source": "cna", "vendor": "TeamViewer"}, "product": "host", "vendor": "teamviewer"}], "created": "2026-09-30T00:00:11.633199+00:00", "updated": "2026-09-30T01:15:04.779963+00:00", "vendors": ["teamviewer", "teamviewer$PRODUCT$full_client", "teamviewer$PRODUCT$host"]}