PT-2026-5255 · Teamviewer · Teamviewer Dex Client+1

Published 2026-01-29 · Updated 2026-02-11 · CVE-2026-23568

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions TeamViewer DEX Client versions prior to 26.1

Description An out-of-bounds read issue exists in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) on Windows. A specially crafted packet sent by an attacker on the adjacent network can lead to information disclosure or denial-of-service. The leaked memory could potentially be used to bypass Address Space Layout Randomization (ASLR) and enable further exploitation.

Recommendations Update TeamViewer DEX Client to version 26.1 or later.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

BDU:2026-01101

CVE-2026-23568

Affected Products

1E Client

Teamviewer Dex Client

References · 8

• https://teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001 · Vendor Advisory
• https://bdu.fstec.ru/vul/2026-01101 · Security Note
• https://osv.dev/vulnerability/CVE-2026-23568 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-23568 · Security Note
• https://twitter.com/VulmonFeeds/status/2016816890174153090 · Twitter Post
• https://t.me/CVEtracker/43224 · Telegram Post
• https://t.me/cveNotify/151757 · Telegram Post
• https://twitter.com/CVEnew/status/2016805040523206676 · Twitter Post