TeamViewer DEX Client up to 26.0 on Windows Content Distribution Service NomadBranch.exe input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in TeamViewer DEX Client up to 26.0 on Windows. It has been rated as problematic. The affected element is an unknown function of the file NomadBranch.exe of the component Content Distribution Service. Performing a manipulation results in input validation. This vulnerability is identified as CVE-2026-23570. The attack can only be performed from the local network. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, was found in TeamViewer DEX Client up to 26.0 on Windows. This affects an unknown function of the file NomadBranch.exe of the component Content Distribution Service. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on integrity. The summary by CVE is:

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.

The weakness was released with Bank of America. It is possible to read the advisory at teamviewer.com. This vulnerability is uniquely identified as CVE-2026-23570 since 01/14/2026. The exploitability is told to be easy. The attack needs to approached within the local network. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 26.1 eliminates this vulnerability.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector: 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: DEX Client 26.1

Timelineinfo

01/14/2026 CVE reserved
01/29/2026 +15 days Advisory disclosed
01/29/2026 +0 days VulDB entry created
01/29/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: teamviewer.com
Organization: Bank of America
Status: Confirmed

CVE: CVE-2026-23570 (🔒)
GCVE (CVE): GCVE-0-2026-23570
GCVE (VulDB): GCVE-100-343371

Entryinfo

Created: 01/29/2026 10:13
Changes: 01/29/2026 10:13 (65)
Complete: 🔍
Cache ID: 216::103

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