FKIE_CVE-2026-92369
Vulnerability from fkie_nvd - Published: 2026-09-29 16:17 - Updated: 2026-09-30 16:19
Severity
Summary
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
Impacted products
| Vendor | Product | Version |
|---|
{
"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 \u0026 8)",
"status": "affected",
"version": "15.64.0 (Legacy Windows 7 \u0026 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 \u0026 8)",
"status": "affected",
"version": "15.64.0 (Legacy Windows 7 \u0026 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": "2026-09-30T16:19:24.920",
"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"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-92369",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-09-30T15:15:35.268669Z",
"version": "2.0.3"
}
}
]
},
"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"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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