What’s Vulnerable › Vulnerabilities
CVE-2026-12703: Bypass of 2FA for Connections via Unattended Access in TeamViewer for macOS
- Severity: high (CVSS 8.0 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-07-29 · updated 2026-07-30
- Weakness: CWE-288
Description
TeamViewer 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.
Affected products
- TeamViewer ONE: from 15.00 before 15.80 — fixed in 15.80
- TeamViewer Remote: from 15.00 before 15.80 — fixed in 15.80
- TeamViewer Tensor: from 15.00 before 15.80 — fixed in 15.80
How to fix
Upgrade to a fixed version: TeamViewer ONE 15.80; TeamViewer Remote 15.80; TeamViewer Tensor 15.80. Check the vendor advisory for mitigations.
References
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