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TI-2026-62305 Aliases CVE-2026-92370GHSA-27v8-wq28-cjrp

Remote Session Access Control Bypass Leading to Remote Code Execution

Priority MEDIUM 40CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-284.

Summary

An improper access control vulnerability in TeamViewer Full Client, Host, and related affected modules on Windows, Linux, and macOS allows an authenticated remote attacker to bypass user-configured permission settings during session establishment. By modifying access control parameters for restricted features, an attacker can perform actions that were explicitly denied by the victim's configuration. This may result in unauthorized actions and potentially lead to remote code execution on the target system.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00421 36th percentileScored 2026-11-07
Fix Fixed Full Client (TeamViewer): 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows) +5Host (TeamViewer): 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows) +5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TeamViewerFull Client15.0 to before 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.8 (Legacy Windows 7 & 8); 14.7.0 (Windows) to before 14.7.48855 (Windows); 13.2.0 (Windows) to before 13.2.36230 (Windows); 14.7.0 (Linux) to before 14.7.48855 (Linux); 13.2.0 (Linux) to before 13.2.153995 (Linux); 14.7.0 (MacOS) to before 14.7.48855 (MacOS); 13.2.0 (MacOS) to before 13.2.153994 (MacOS)15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS)Patch availableCNA
TeamViewerHost15.0 to before 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.8 (Legacy Windows 7 & 8); 14.7.0 (Windows) to before 14.7.48855 (Windows); 13.2.0 (Windows) to before 13.2.36230 (Windows); 14.7.0 (Linux) to before 14.7.48855 (Linux); 13.2.0 (Linux) to before 13.2.153995 (Linux); 14.7.0 (MacOS) to before 14.7.48855 (MacOS); 13.2.0 (MacOS) to before 13.2.153994 (MacOS)15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS)Patch availableCNA
  • Full Client VendorTeamViewer Affected 15.0 to before 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.8 (Legacy Windows 7 & 8); 14.7.0 (Windows) to before 14.7.48855 (Windows); 13.2.0 (Windows) to before 13.2.36230 (Windows); 14.7.0 (Linux) to before 14.7.48855 (Linux); 13.2.0 (Linux) to before 13.2.153995 (Linux); 14.7.0 (MacOS) to before 14.7.48855 (MacOS); 13.2.0 (MacOS) to before 13.2.153994 (MacOS) Fixed in 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS) Patch available CNA
  • Host VendorTeamViewer Affected 15.0 to before 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.8 (Legacy Windows 7 & 8); 14.7.0 (Windows) to before 14.7.48855 (Windows); 13.2.0 (Windows) to before 13.2.36230 (Windows); 14.7.0 (Linux) to before 14.7.48855 (Linux); 13.2.0 (Linux) to before 13.2.153995 (Linux); 14.7.0 (MacOS) to before 14.7.48855 (MacOS); 13.2.0 (MacOS) to before 13.2.153994 (MacOS) Fixed in 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS) Patch available CNA

Remediation

  • Fix · CNA Full Client (TeamViewer) Fixed in 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS)
  • Fix · CNA Host (TeamViewer) Fixed in 15.82, 15.64.8 (Legacy Windows 7 & 8), 14.7.48855 (Windows), 13.2.36230 (Windows), 14.7.48855 (Linux), 13.2.153995 (Linux), 14.7.48855 (MacOS), 13.2.153994 (MacOS)

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    TeamViewer Full Client, Host — teamviewer.com/en/resources/trust-center/security-bulletins…

    5 records Highest priority Priority MEDIUM 1 MEDIUM, 4 LOW

    Other records, highest priority first

    • TI-2026-62303 Heap-Based Buffer Overflow in TeamViewer Session Recording Playback Leads to Remote Code ExecutionPriority LOW 35
    • TI-2026-16009 Improper Limitation of a Pathname to a Restricted Directory (Path Traversal) in TeamViewer Desktop ClientsPriority LOW 35
    • TI-2026-62304 Time-of-check time-of-use race condition in TeamViewer Full ClientPriority LOW 33
    Show all 5 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-92370
  2. 2026-10-03 Alias added: GHSA-27v8-wq28-cjrp

References

Advisory 1

  • TI-2019-13681 TeamViewer Desktop through 14.7.1965 allows a bypass of remote-login access control… KEVCVSS 3.1HIGH 7.0
  • TI-2020-10745 TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI… CVSS 3.1HIGH 8.8
  • TI-2010-02989 Untrusted search path vulnerability in TeamViewer 5.0.8703 and earlier allows local… CVSS 2.0HIGH 9.3
  • TI-2021-13849 Memory corruption in TeamViewer CVSS 3.1HIGH 8.8
  • TI-2018-11870 TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force… CVSS 3.0CRITICAL 9.8
  • TI-2025-28565 File Hash Validation Bypass in NomadBranch.exe CVSS 3.1HIGH 8.8
See all 67 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences