CVE-2026-23567 — MEDIUM (6.5)

Q: How severe is CVE-2026-23567?

CVE-2026-23567 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-23567?

Check the references section above for vendor advisories and patch information. Affected products include: Teamviewer Digital Employee Experience, Microsoft Windows.

Vulnerability Description

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.

CVSS Score

6.5

MEDIUM

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Teamviewer	Digital Employee Experience	< 26.1
Microsoft	Windows	-

Related Weaknesses (CWE)

CWE-122

References

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

FAQ

What is CVE-2026-23567?

CVE-2026-23567 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 netwo...

How severe is CVE-2026-23567?

CVE-2026-23567 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-23567?

Check the references section above for vendor advisories and patch information. Affected products include: Teamviewer Digital Employee Experience, Microsoft Windows.