CVE-2025-12687 Denial-of-Service Vulnerability in NomadBranch.exe
Attackers can crash the TeamViewer DEX Client Content Distribution Service via a crafted command, causing service termination.
- 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-2025-12687?
CVE-2025-12687 is a medium-severity denial of service vulnerability in TeamViewer DEX, published on 11 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in TeamViewer DEX Client (former 1E Client) - Content Distribution Service (NomadBranch.exe) prior version 25.11 for Windows allows malicious actors to cause a denial of service (application crash) via a crafted command, resulting in service termination.
Weakness: CWE-20
Which versions are affected by CVE-2025-12687?
It affects 1 product.
Products include Teamviewer Digital Employee Experience.
How do I fix CVE-2025-12687?
No fix has been published for CVE-2025-12687 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-12687 being exploited?
There is no known exploitation of CVE-2025-12687 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-9f92-cqmm-3frg.