CVE-2026-23570 - Vulnerability Details - OpenCVE

A missing validation of a user-controlled value in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to tamper with log timestamps via crafted UDP Sync command. This could result in forged or nonsensical datetime prefixes and compromising log integrity and forensic correlation.

No CVSS v4.0

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Teamviewer	Dex

No data.

No data.

References

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

History

Fri, 30 Jan 2026 09:00:00 +0000

Type	Values Removed	Values Added
First Time appeared		Teamviewer Teamviewer dex
Vendors & Products		Teamviewer Teamviewer dex

Thu, 29 Jan 2026 16:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 29 Jan 2026 09:00:00 +0000

Type	Values Removed	Values Added
Description		A missing validation of a user-controlled value in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an adjacent network attacker to tamper with log timestamps via crafted UDP Sync command. This could result in forged or nonsensical datetime prefixes and compromising log integrity and forensic correlation.
Title		Log timestamp tampering vulnerability in Content Distribution Service
Weaknesses		CWE-20
References		https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}`

MITRE

Status: PUBLISHED

Assigner: TV

Published: 2026-01-29T08:50:52.882Z

Updated: 2026-01-29T15:45:56.209Z

Reserved: 2026-01-14T13:54:40.322Z

Link: CVE-2026-23570

Vulnrichment

Updated: 2026-01-29T15:41:18.715Z

NVD

Status : Awaiting Analysis

Published: 2026-01-29T09:16:04.737

Modified: 2026-01-29T16:31:00.867

Link: CVE-2026-23570

Redhat

No data.

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