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CVE-2026-23570

Log timestamp tampering vulnerability in Content Distribution Service

Published: Jan 29, 2026Updated: Feb 11, 2026 Sources: CVE List NVD BDUCWE-20
6.5MEDIUM
NVD MITRE
EPSS Score
0.7%
Top 50.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-20

Affected Products

TeamViewer GmbH
commercial·DEaka teamviewer
digital employee experienceOn-premWeb App
Communications / messaging-chat
1E ClientSaaS
Security Products / secure-gateway-vpn
DEXOn-premDesktop App
Communications / messaging-chat

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

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

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