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Vulnerable Software

Vulnerability Details CVE-2026-23567

An integer underflow in the UDP command handler of the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to trigger a heap-based buffer overflow and cause a denial-of-service (service crash) via specially crafted UDP packets.

Exploit prediction scoring system (EPSS) score

EPSS Score 0.0

EPSS Ranking 9.3%

CVSS Severity

CVSS v3 Score 6.5

References

https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/

Products affected by CVE-2026-23567

Teamviewer » Digital Employee Experience » Version: 15.0

cpe:2.3:a:teamviewer:digital_employee_experience:15.0
Teamviewer » Digital Employee Experience » Version: 17.1

cpe:2.3:a:teamviewer:digital_employee_experience:17.1
Teamviewer » Digital Employee Experience » Version: 19.2

cpe:2.3:a:teamviewer:digital_employee_experience:19.2
Teamviewer » Digital Employee Experience » Version: 21.0

cpe:2.3:a:teamviewer:digital_employee_experience:21.0
Teamviewer » Digital Employee Experience » Version: 21.1

cpe:2.3:a:teamviewer:digital_employee_experience:21.1
Teamviewer » Digital Employee Experience » Version: 25.0

cpe:2.3:a:teamviewer:digital_employee_experience:25.0
Teamviewer » Digital Employee Experience » Version: 25.11

cpe:2.3:a:teamviewer:digital_employee_experience:25.11
Teamviewer » Digital Employee Experience » Version: 3.4

cpe:2.3:a:teamviewer:digital_employee_experience:3.4
Microsoft » Windows » Version: N/A

cpe:2.3:o:microsoft:windows:-

Vulnerabilities

Vulnerable Software

Vulnerability Details CVE-2026-23567

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