Bypass of 2FA for Connections via Unattended Access in TeamViewer for macOS

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-12703
StatePUBLISHED
AssignerTV
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-07-29 15:16:20 UTC
Updated2026-07-30 16:45:00 UTC
DescriptionTeamViewer Full Client and Host for macOS before version 15.80 contain a business logic error that can allow an authenticated attacker to bypass a configured 2FA for Connections approval flow via Unattended Access and establish a remote connection to an affected macOS host.

Risk And Classification

Primary CVSS: v3.1 8 HIGH from [email protected]

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

EPSS: 0.002340000 probability, percentile 0.145000000 (date 2026-08-03)

Problem Types: CWE-288 | CWE-288 CWE-288 Authentication bypass using an alternate path or channel

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS8HIGHCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TeamViewer Remote affected 15.00 15.80 custom MacOS
CNA TeamViewer Tensor affected 15.00 15.80 custom MacOS
CNA TeamViewer ONE affected 15.00 15.80 custom MacOS

References

ReferenceSourceLinkTags
www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1007 [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: We thank dameb for the discovery and responsible disclosure (en)

Additional Advisory Data

Solutions

CNA: Update to the latest version (15.80 or the latest version available)

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