Vulnerability · Published Jul 29, 2026 · Assigned by TV
CVE-2026-12703Bypass of 2FA for Connections via Unattended Access in TeamViewer for macOS
High 8.0
In plain English
A high-severity authentication bypass in ONE from TeamViewer. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 3.1)8.0High
Exploit odds (30 days)0.4%top 65.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| TeamViewer | Remote | 15.00 – before 15.80 |
| TeamViewer | Tensor | 15.00 – before 15.80 |
| TeamViewer | ONE | 15.00 – before 15.80 |
Weakness: CWE-288 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H