Privilege Escalation via Insecure Package Handling in TeamViewer Full Client and Host for macOS

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-92374
StatePUBLISHED
AssignerTV
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-27 16:17:31 UTC
Updated2026-11-04 21:18:15 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.000920000 probability, percentile 0.005040000 (date 2026-11-04)

Problem Types: CWE-367 | CWE-367 CWE-367 Time-of-check time-of-use (TOCTOU) race condition

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TeamViewer Full Client affected 15.83 custom MacOS
CNA TeamViewer Full Client affected 14.7.0 14.7.48868 custom MacOS
CNA TeamViewer Full Client affected 13.2.0 13.2.154007 custom MacOS
CNA TeamViewer Host affected 15.83 custom MacOS
CNA TeamViewer Host affected 14.7.0 14.7.48868 custom MacOS
CNA TeamViewer Host affected 13.2.0 13.2.154007 custom MacOS

References

ReferenceSourceLinkTags
www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1011 [email protected] www.teamviewer.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: HeaZzy (Mathys KHALFA) & skav (Antoine RIEUL) (en)

Additional Advisory Data

Solutions

CNA: Update to the latest available version.

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