CVE-2025-44016: digital employee Input Validation Flaw

Description

A vulnerability in TeamViewer DEX Client (former 1E client) - Content Distribution Service (NomadBranch.exe) prior version 25.11 for Windows allows malicious actors to bypass file integrity validation via a crafted request. By providing a valid hash for a malicious file, an attacker can cause the service to incorrectly validate and process the file as trusted, enabling arbitrary code execution under the Nomad Branch service context.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor	Product	Versions
teamviewer	digital_employee_experience	< 25.11
microsoft	windows	All

References

Advisories & Patches

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2025-1005/

Frequently Asked Questions

What is CVE-2025-44016? +

A vulnerability in TeamViewer DEX Client (former 1E client) - Content Distribution Service (NomadBranch.exe) prior version 25.11 for Windows allows malicious actors to bypass file integrity validation via a crafted request. By providing a valid hash for a malicious file, an attacker can cause the service to incorrectly validate and process the file as trusted, enabling arbitrary code execution under the Nomad Branch service context. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2025-44016? +

CVE-2025-44016 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-44016? +

CVE-2025-44016 affects products from microsoft, teamviewer, specifically: digital_employee_experience, windows. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-44016? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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