Is CVE-2026-8381 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-8381 being exploited in the wild.

How severe is CVE-2026-8381?

Medium severity, with a CVSS score of 5.4, published 22 May 2026.

Which products and versions are affected?

Teamviewer DEX Platform On-Premises < 9.2.

Is there a fix for CVE-2026-8381?

A patch was published on 2026-05-22: Fix released in version 9.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-8381 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-8381?

Check whether you run Teamviewer DEX Platform On-Premises at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8381: TeamViewer DEX Platform broken access control in backend API

Q: Is there a fix for CVE-2026-8381?

A patch was published on 2026-05-22: Fix released in version 9.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-8381 attacked?

It is attacked over the network, in a network appliance.

Q: Am I affected by CVE-2026-8381?

Check whether you run Teamviewer DEX Platform On-Premises at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-8381 · Severity: medium · CVSS 5.4 · Published 2026-05-22

A security flaw in the TeamViewer DEX Platform (On-Premises) allows users with standard access to perform administrative tasks or view sensitive information they should not be able to see. This occurs because certain backend systems do not properly verify a user's permission level before processing requests. An attacker with basic login credentials could exploit this to gain unauthorized control over administrative functions or access restricted data.

Vendors: Teamviewer.

Quick answers

Is CVE-2026-8381 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-8381 being exploited in the wild.
How severe is CVE-2026-8381?: Medium severity, with a CVSS score of 5.4, published 22 May 2026.
Which products and versions are affected?: Teamviewer DEX Platform On-Premises < 9.2.
Is there a fix for CVE-2026-8381?: A patch was published on 2026-05-22: Fix released in version 9.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-8381 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-8381?: Check whether you run Teamviewer DEX Platform On-Premises at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A broken access control vulnerability (CWE-862) exists in the TeamViewer DEX Platform (On-Premises) prior to version 9.2. The root cause is a failure in certain backend API endpoints to correctly enforce server-side authorization checks. An attacker with valid, low-privileged credentials can send crafted requests to these endpoints to perform actions or access resources intended only for higher-privileged roles. The vulnerability is reachable over the network and does not require user interaction. TeamViewer has addressed this issue in version 9.2.

Affected products

TeamViewer DEX Platform (On-Premises) < 9.2

Timeline

2026-05-22: advisory: TeamViewer security bulletin TV-2026-1005 published
2026-05-22: disclosed: CVE-2026-8381 published to NVD
2026-05-22: patched: Fix released in version 9.2

References

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1005/

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