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CVE-2026-92374— Privilege Escalation via Insecure Package Handling in TeamViewer Full Client and Host for macOS

Quick assessment

Affected
TeamViewer Full Client
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.

在 macOS 平台上，TeamViewer 完整客户端和主机（版本早于 15.83）的特权辅助程序中存在检查时间与使用时间（TOCTOU）竞态条件，并伴随符号链接处理不当的问题。这使得拥有低权限的本地攻击者能够绕过安装包验证，从而安装恶意安装包。成功利用该漏洞可导致本地权限提升至 root 权限。

CVSS 7.8 · High

Affected Version Matrix 6

VendorProduct Version RangeStatus
TeamViewer Full Client < 15.83 affected
14.7.0< 14.7.48868 affected
13.2.0< 13.2.154007 affected
TeamViewer Host < 15.83 affected
14.7.0< 14.7.48868 affected
13.2.0< 13.2.154007 affected
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I. Basic Information for CVE-2026-92374

Vulnerability Information
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Vulnerability Title
Privilege Escalation via Insecure Package Handling in TeamViewer Full Client and Host for macOS
Source: CVE Program / CVE List V5
Vulnerability Description
A 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TeamViewer Full Client 0 ~ 15.83 -
TeamViewer Host 0 ~ 15.83 -

II. Public POCs for CVE-2026-92374

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III. Intelligence Information for CVE-2026-92374

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Other References for CVE-2026-92374 (1)

Same Patch Batch · TeamViewer · 2026-10-27 · 9 CVEs total

CVE-2026-92372 8.8 HIGH Out-of-bounds Write in TeamViewer Full Client for Linux and macOS Allows Remote Code Execu
CVE-2026-111585 8.8 HIGH Integer Overflow in TeamViewer Remote Control Screen Decompression Leading to Heap-Based B
CVE-2026-92375 7.8 HIGH Local privilege escalation via improper IPC access control in TeamViewer Remote Management
CVE-2026-92376 7.8 HIGH Local Privilege Escalation via IPC Broker Impersonation in TeamViewer Remote Management Mo
CVE-2026-92377 7.8 HIGH Local Privilege Escalation via DLL Sideloading in TeamViewer Patch Management for Windows
CVE-2026-111584 7.3 HIGH Local Privilege Escalation via Race Condition in TeamViewer Patch Management for Windows
CVE-2026-111582 7.3 HIGH Local Privilege Escalation via DLL Hijacking in TeamViewer Monitoring for Windows
CVE-2026-111583 7.3 HIGH Local Privilege Escalation during Advanced Asset Management Installation in TeamViewer Cli

IV. Related Vulnerabilities

Same product: Full Client
Same vendor: TeamViewer
Same weakness: CWE-367