TI-2026-18993 Aliases CVE-2026-23572 GHSA-g7h5-x73h-q9px

Improper Access Control in TeamViewer clients

LOW 34CWE-863Published 2026-02-05 · Updated 2026-02-05

Key facts

Attack vector: Network
Privileges required: High
User interaction: None
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-863.

Summary

Improper access control in the TeamViewer Full and Host clients (Windows, macOS, Linux) prior version 15.74.5 allows an authenticated user to bypass additional access controls with “Allow after confirmation” configuration in a remote session. An exploit could result in unauthorized access prior to local confirmation. The user needs to be authenticated for the remote session via ID/password, Session Link, or Easy Access as a prerequisite to exploit this vulnerability.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00324 25th percentileScored 2026-11-07

Fix Fixed Remote (TeamViewer): 15.74.5Tensor (TeamViewer): 15.74.5+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

Vendor	Product	Affected versions	Fixed in	Status	Source
TeamViewer	Remote	before 15.74.5	15.74.5	Patch available	CNA
TeamViewer	Tensor	before 15.74.5	15.74.5	Patch available	CNA
TeamViewer	One	before 15.74.5	15.74.5	Patch available	CNA

Remote VendorTeamViewer Affected before 15.74.5 Fixed in 15.74.5 Patch available CNA
Tensor VendorTeamViewer Affected before 15.74.5 Fixed in 15.74.5 Patch available CNA
One VendorTeamViewer Affected before 15.74.5 Fixed in 15.74.5 Patch available CNA

Remediation

Fix · CNA Remote (TeamViewer) Fixed in 15.74.5
Fix · CNA Tensor (TeamViewer) Fixed in 15.74.5
Fix · CNA One (TeamViewer) Fixed in 15.74.5

Timeline

2026-10-02 Threatist record created from CVE-2026-23572
2026-10-03 Alias added: GHSA-g7h5-x73h-q9px

References

Other 1

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1003/

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