Out-of-Bounds Read Vulnerability in TeamViewer DEX Client for Windows
CVE-2026-23569

6.5MEDIUM

Key Information:

Vendor

Teamviewer

Status
Dex
Vendor
CVE Published:
29 January 2026

What is CVE-2026-23569?

The TeamViewer DEX Client (formerly 1E Client) has an out-of-bounds read vulnerability in its Content Distribution Service (NomadBranch.exe) for Windows systems, specifically in versions prior to 26.1. This vulnerability allows a remote attacker to craft a request that could leak stack memory, potentially leading to a denial of service. Moreover, the leaked stack data may be exploited to bypass Address Space Layout Randomization (ASLR), facilitating the exploitation of other vulnerabilities within the affected system.

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Affected Version(s)

DEX Windows 0 < 26.1

References

https://www.teamviewer.com/en/resources/trust-center/secu...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Threat Hunt Team of Bank of America
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