CVE-2025-12687
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedA 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceA denial of service vulnerability exists in the TeamViewer DEX Client (formerly 1E Client) Content Distribution Service (NomadBranch.exe) on Windows. The vulnerability allows remote attackers to send a crafted command to the service prior to version 25.11, causing the application to crash and terminate unexpectedly.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data< 25.11CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Locate the NomadBranch.exe serviceOpen Services (services.msc) and search for Content Distribution Service, or run 'tasklist /FI "IMAGENAME eq NomadBranch.exe"' in Command PromptAffected if The NomadBranch.exe process or service is found - indicating TeamViewer DEX Client (1E Client) is installed
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Identify installed version of TeamViewer DEX ClientOpen Programs and Features (appwiz.cpl) and locate TeamViewer Digital Employee Experience or 1E Client entry to view version, or right-click the NomadBranch.exe file in the installation directory and check Properties > Details for File VersionAffected if Cannot locate the product or the version is not visible
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Compare version against affected rangeReview the installed version number - look for major.minor.build format (e.g., 25.10, 25.6, 24.5)Affected if Installed version is less than 25.11 (for example: 25.10, 25.6, 24.x, any earlier version)
Your environment is affected if NomadBranch.exe is present and the installed version of TeamViewer DEX Client (1E Client) is below 25.11.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped25.11
Update TeamViewer DEX Client (1E Client) to version 25.11 or later to resolve this vulnerability. Organizations should verify all deployed instances are running the patched version.
25.11
- 1. Identify all systems running TeamViewer DEX Client (formerly 1E Client) on Windows
- 2. Verify current version by checking NomadBranch.exe file version or checking the installed version through Programs and Features
- 3. Download the updated TeamViewer DEX Client version 25.11 from the official TeamViewer website or your licensed download portal
- 4. Deploy the update following your organization's change management procedures
- 5. Verify successful installation by confirming version 25.11 is installed on affected systems
- 6. Test that the Content Distribution Service (NomadBranch.exe) runs normally after update
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-12687 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-12687 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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