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TI-2026-81368 Aliases CVE-2026-111585GHSA-jfxf-g3r2-4998

Integer overflow in TeamViewer screen processing enables heap overflow

Priority MEDIUM 40CWE-190Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-190 and the CVSS impact.

Summary

TeamViewer Full Client, Portable and Remote Control clients before 15.83 are affected, along with older Full Client branches. An integer overflow in the remote-control screen processing component (CWE-190) leads to a heap-based buffer overflow. A malicious remote host can cause a denial of service or, depending on the platform, potentially execute arbitrary code with the privileges of the viewer process. Exploitation requires that a user establish a remote-control session to the attacker-controlled or compromised host.

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

Description from the CNA

An integer overflow in the remote-control screen processing component of TeamViewer clients (Full Client, Portable and Remote Control App) prior to version 15.83 may allow a malicious remote host to cause a denial of service or, depending on the platform, potentially execute arbitrary code with the privileges of the viewer process. Exploitation requires a user to establish a remote-control session to an attacker-controlled or compromised host.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00288 21st percentileScored 2026-11-07
Fix Fixed Full Client (TeamViewer): 15.83, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 (Windows) +5Portable (TeamViewer): 15.83, 15.64.10 (Legacy Windows 7 & 8)+1 more product

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 15.83; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 (Windows) to before 14.7.48868 (Windows); 14.7.0 (Linux) to before 14.7.48868 (Linux); 14.7.0 (macOS) to before 14.7.48868 (macOS); 13.2.0 (Windows) to before 13.2.36231 (Windows); 13.2.0 (Linux) to before 13.2.154008 (Linux); 13.2.0 (macOS) to before 13.2.154007 (macOS)15.83, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 (Windows), 14.7.48868 (Linux), 14.7.48868 (macOS), 13.2.36231 (Windows), 13.2.154008 (Linux), 13.2.154007 (macOS)Patch availableCNA
TeamViewerPortablebefore 15.83; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8)15.83, 15.64.10 (Legacy Windows 7 & 8)Patch availableCNA
TeamViewerRemote Controlbefore 15.8315.83Patch availableCNA
  • Full Client VendorTeamViewer Affected before 15.83; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8); 14.7.0 (Windows) to before 14.7.48868 (Windows); 14.7.0 (Linux) to before 14.7.48868 (Linux); 14.7.0 (macOS) to before 14.7.48868 (macOS); 13.2.0 (Windows) to before 13.2.36231 (Windows); 13.2.0 (Linux) to before 13.2.154008 (Linux); 13.2.0 (macOS) to before 13.2.154007 (macOS) Fixed in 15.83, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 (Windows), 14.7.48868 (Linux), 14.7.48868 (macOS), 13.2.36231 (Windows), 13.2.154008 (Linux), 13.2.154007 (macOS) Patch available CNA
  • Portable VendorTeamViewer Affected before 15.83; 15.64.0 (Legacy Windows 7 & 8) to before 15.64.10 (Legacy Windows 7 & 8) Fixed in 15.83, 15.64.10 (Legacy Windows 7 & 8) Patch available CNA
  • Remote Control VendorTeamViewer Affected before 15.83 Fixed in 15.83 Patch available CNA

Remediation

Update TeamViewer Full Client to 15.83, 15.64.10 for Legacy Windows 7 and 8, 14.7.48868 for Windows, Linux and macOS, 13.2.36231 for Windows, 13.2.154008 for Linux, or 13.2.154007 for macOS. Update TeamViewer Portable to 15.83 or 15.64.10 for Legacy Windows 7 and 8, and update TeamViewer Remote Control to 15.83.

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

  • Fix · CNA Full Client (TeamViewer) Fixed in 15.83, 15.64.10 (Legacy Windows 7 & 8), 14.7.48868 (Windows), 14.7.48868 (Linux), 14.7.48868 (macOS), 13.2.36231 (Windows), 13.2.154008 (Linux), 13.2.154007 (macOS)
  • Fix · CNA Portable (TeamViewer) Fixed in 15.83, 15.64.10 (Legacy Windows 7 & 8)
  • Fix · CNA Remote Control (TeamViewer) Fixed in 15.83

Fixed in the same release

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

  • Advisory ·

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

    3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-81359 Out-of-bounds write in TeamViewer Full Client for Linux and macOSPriority MEDIUM 40
    • TI-2026-81360 Privilege escalation via insecure package handling in TeamViewer for macOSPriority LOW 35
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-27 Threatist record created from CVE-2026-111585
  2. 2026-10-27 Alias added: GHSA-jfxf-g3r2-4998
  3. 2026-10-28 Priority changed: MEDIUM → LOW
  4. 2026-11-04 CISA SSVC decision points changed
  5. 2026-11-04 Priority changed: LOW → MEDIUM

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