CVE-2026-23569 Out-of-bounds read vulnerability in Content Distribution Service
Remote attackers can leak stack memory and cause denial of service in TeamViewer DEX Client, potentially bypassing ASLR to aid further exploitation.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23569?
CVE-2026-23569 is a medium-severity vulnerability in TeamViewer DEX, published on 29 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-125
Which versions are affected by CVE-2026-23569?
It affects 1 product.
Products include Teamviewer Digital Employee Experience.
How do I fix CVE-2026-23569?
No fix has been published for CVE-2026-23569 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23569 being exploited?
There is no known exploitation of CVE-2026-23569 in the wild and no public exploit code.
Other vulnerabilities in TeamViewer DEX
- CVE-2025-44016 File Hash Validation Bypass in NomadBranch.exe
- CVE-2025-64986 Command Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort Instruction
- CVE-2025-64987 Command Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC Instruction
- CVE-2025-64988 Command Injection in 1E-Nomad-GetCmContentLocations Instruction
- CVE-2025-64989 Command Injection in 1E-Explorer-TachyonCore-FindFileBySizeAndHash Instruction
Sources
Also known as GHSA-6hp2-gvhf-wmvw.