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TI-2026-81363 Aliases CVE-2026-92377GHSA-vxc2-f44m-mw78

TeamViewer Patch Management flaw allows local privilege escalation

Priority LOW 35CWE-732Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Improper access control in the Patch Management update mechanism of TeamViewer Full Client and Host for Windows before 15.82 lets a local authenticated attacker with low privileges supply a signed executable through a forged IPC response. The executable then loads a malicious DLL from a user-writable temporary directory, which gives arbitrary code execution with NT AUTHORITY\SYSTEM privileges. The flaw is classified as CWE-732.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

Description from the CNA

Improper access control in the Patch Management update mechanism of TeamViewer Full Client and Host for Windows prior to version 15.82 allows a local authenticated attacker with low privileges to supply a signed executable through a forged IPC response and cause it to load a malicious DLL from a user-writable temporary directory. Successful exploitation results in arbitrary code execution with NT AUTHORITY\SYSTEM privileges.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00109 1st percentileScored 2026-11-07
Fix Fixed Full Client (TeamViewer): 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 +1Host (TeamViewer): 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 +1

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 Clientbefore 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 to before 14.7.48868; 13.2.0 to before 13.2.3623115.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231Patch availableCNA
TeamViewerHostbefore 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 to before 14.7.48868; 13.2.0 to before 13.2.3623115.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231Patch availableCNA
  • Full Client VendorTeamViewer Affected before 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 to before 14.7.48868; 13.2.0 to before 13.2.36231 Fixed in 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231 Patch available CNA
  • Host VendorTeamViewer Affected before 15.82; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 to before 14.7.48868; 13.2.0 to before 13.2.36231 Fixed in 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231 Patch available CNA

Remediation

Update TeamViewer Full Client and TeamViewer Host for Windows to version 15.82, to 15.64.10 on legacy Windows 7 and 8, to 14.7.48868, or to 13.2.36231.

Written with Claude Haiku 5.5 from the sources below · 2026-11-04

  • Fix · CNA Full Client (TeamViewer) Fixed in 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231
  • Fix · CNA Host (TeamViewer) Fixed in 15.82, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868, 13.2.36231

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…

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-81361 Local privilege escalation in TeamViewer Remote Management MonitoringPriority LOW 35
    • TI-2026-81366 Local privilege escalation in TeamViewer Client for Windows installerPriority LOW 33
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-92377
  2. 2026-10-27 Alias added: GHSA-vxc2-f44m-mw78
  3. 2026-10-28 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed

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