← Vulnerability feed

Vulnerability record · CVE-2025-44016 · published 11 December 2025

CVE-2025-44016: Teamviewer digital employee experience improper input validation vulnerability

Teamviewer · Digital Employee Experience

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.

8.8 CVSS 3.1 High EPSS 0.30% · top 79.5% CWE-20 · Improper input validation
8.8CVSS 3.1 base score
0.30%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

Track CVE-2025-44016 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.1CVE-2026-23568Teamviewer digital employee experience out-of-bounds read vulnerabilityAn out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26…EPSS 0.21%7.5CVE-2026-23569Teamviewer digital employee experience out-of-bounds read vulnerabilityAn out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26…EPSS 0.37%7.2CVE-2025-64991Teamviewer digital employee experience improper input validation vulnerabilityA command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-PatchInsights-Deploy instruction prior…EPSS 0.87%7.2CVE-2025-64992Teamviewer digital employee experience improper input validation vulnerabilityA command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Nomad-PauseNomadJobQueue instruction p…EPSS 0.87%7.2CVE-2025-64993Teamviewer digital employee experience improper input validation vulnerabilityA command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-ConfigMgrConsoleExtensions instruction…EPSS 0.87%7.2CVE-2025-64986Teamviewer digital employee experience improper input validation vulnerabilityA command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Explorer-TachyonCore-DevicesListeningO…EPSS 1.2%7.2CVE-2025-64987Teamviewer digital employee experience improper input validation vulnerabilityA command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Explorer-TachyonCore-CheckSimpleIoC in…EPSS 1.2%7.2CVE-2025-64988Teamviewer digital employee experience improper input validation vulnerabilityA command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Nomad-GetCmContentLocations instructio…EPSS 1.2%

Source: NIST National Vulnerability Database (record CVE-2025-44016), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.