CVE-2026-23572 Improper Access Control in TeamViewer clients
Authenticated users can bypass confirmation prompts in TeamViewer remote sessions, gaining unauthorized access before local user approval.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23572?
CVE-2026-23572 is a high-severity authentication bypass vulnerability in TeamViewer One, published on 5 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-23572?
How do I fix CVE-2026-23572?
No fix has been published for CVE-2026-23572 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-23572 being exploited?
There is no known exploitation of CVE-2026-23572 in the wild and no public exploit code.
Sources
Also known as GHSA-g7h5-x73h-q9px.