CVE-2026-12703— Bypass of 2FA for Connections via Unattended Access in TeamViewer for macOS
Quick assessment
Affected
TeamViewer Remote
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
TeamViewer TeamViewer Remote Full Client是TeamViewer公司的一款远程桌面访问与控制客户端软件。 TeamViewer Remote Full Client 15.80之前版本存在授权问题漏洞，该漏洞源于业务逻辑错误，可能允许经过身份验证的攻击者绕过配置的2FA，通过无人值守访问建立远程连接到受影响的macOS主机。
Affected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| TeamViewer | ONE | 15.00< 15.80 |
affected |
| TeamViewer | Remote | 15.00< 15.80 |
affected |
| TeamViewer | Tensor | 15.00< 15.80 |
affected |
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I. Basic Information for CVE-2026-12703
Vulnerability Information
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Vulnerability Title
Bypass of 2FA for Connections via Unattended Access in TeamViewer for macOS
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
TeamViewer Remote Full Client 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
TeamViewer TeamViewer Remote Full Client是TeamViewer公司的一款远程桌面访问与控制客户端软件。 TeamViewer Remote Full Client 15.80之前版本存在授权问题漏洞，该漏洞源于业务逻辑错误，可能允许经过身份验证的攻击者绕过配置的2FA，通过无人值守访问建立远程连接到受影响的macOS主机。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| TeamViewer | Remote | 15.00 ~ 15.80 | - |
|
| TeamViewer | Tensor | 15.00 ~ 15.80 | - |
|
| TeamViewer | ONE | 15.00 ~ 15.80 | - |
|
II. Public POCs for CVE-2026-12703
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-12703 (1)
-
🔗 TV-2026-1007 vendor-advisory
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