High severity · published Jan 29, 2026
CVE-2026-23569
An out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows a remote…
7.5
CVSS
0.4%
EPSS
No
On KEV
Description
An out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows a remote attacker to leak stack memory and cause a denial of service via a crafted request. The leaked stack memory could be used to bypass ASLR remotely and facilitate exploitation of other vulnerabilities on the affected system.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DE
Digital Employee Experience · Teamviewer
before 26.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-23569
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-23569
Vendor Advisory
https://www.teamviewer.com/en/resources/trust-center/security-bulletins/tv-2026-1001/
More from Digital Employee Experience
8.8
CVE-2025-44016
A vulnerability in TeamViewer DEX Client (former 1E client) - Content Distribution Service (NomadBranch.exe) prior version 25.11 for Windows allows malicious actors to bypass file…
8.1
CVE-2026-23568
An out-of-bounds read vulnerability in the TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 26.1 for Windows allows an…
7.2
CVE-2025-64993
A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-ConfigMgrConsoleExtensions instructions
7.2
CVE-2025-64992
A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Nomad-PauseNomadJobQueue instruction prior V25
7.2
CVE-2025-64991
A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-PatchInsights-Deploy instruction prior V15
