CVE-2026-8381Network attack vector

Privilege escalation via missing API authorization

Published May 22, 2026 · Updated May 22, 2026

Missing authorization in TeamViewer DEX Platform (On-Premises) before 9.2 allows remote authenticated users to access privileged API functions. Certain backend API endpoints fail to enforce server-side authorization before serving requests or executing restricted actions. Low-privileged credentials are required, and exploitation exposes administrative or sensitive functionality without affecting service availability.

CVSS severity5.4
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in TeamViewer DEX Platform (On-Premises) before 9.2 allows remote authenticated users to access privileged API functions. Certain backend API endpoints fail to enforce server-side authorization before serving requests or executing restricted actions. Low-privileged credentials are required, and exploitation exposes administrative or sensitive functionality without affecting service availability.

The record

CVE
CVE-2026-8381
Published
May 22, 2026
Updated
May 22, 2026
Vendor
TeamViewer
Product
TeamViewer DEX Platform (On-Premises)
Classifications
CWE-862, CAPEC-122, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 22, 2026CVE publishedPublication date reported by the CVE source.
  2. May 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <9.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

TeamViewer · TeamViewer DEX Platform (On-Premises)version=0 <9.2

Published CVSS scores

5.4TeamViewer Germany GmbHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
CAPEC-122Privilege Abuse
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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