CVE-2025-44016
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 bypass file integrity validation via a crafted request. By providing a valid hash for a malicious file, an attacker can cause the service to incorrectly validate and process the file as trusted, enabling arbitrary code execution under the Nomad Branch service context.
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 · high confidenceA file integrity validation bypass vulnerability in TeamViewer DEX Client's Content Distribution Service (NomadBranch.exe) allows attackers to supply a valid cryptographic hash for a malicious file, causing the service to incorrectly trust and execute it. This enables arbitrary code execution under the Nomad Branch service context.
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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/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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Confirm TeamViewer DEX Client installationLook for TeamViewer DEX or Digital Employee Experience installation on the system via Programs and Features, or search for TeamViewer DEX-related directories in Program FilesAffected if TeamViewer DEX Client is not found, the system is not affected
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Locate the NomadBranch.exe componentSearch for NomadBranch.exe in TeamViewer DEX installation directories, typically under the Content Distribution Service pathAffected if NomadBranch.exe is not present, the specific vulnerable component is not installed
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Determine installed TeamViewer DEX versionRight-click NomadBranch.exe (or the main TeamViewer DEX application), select Properties, and check the File Version or Product Version fieldAffected if The version shown is lower than 25.11 (e.g., 25.10, 25.9, etc.)
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Check for running NomadBranch.exe serviceOpen Task Manager or run 'tasklist /FI "IMAGENAME eq NomadBranch.exe"' in Command Prompt to see if the Content Distribution Service is actively runningAffected if The service is running and the version is below 25.11, the vulnerability is exploitable in the current session
A system is affected if TeamViewer DEX Client with NomadBranch.exe is installed and the version is below 25.11, as only versions prior to 25.11 contain the file integrity validation bypass in the Content Distribution Service.
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
Upgrade TeamViewer DEX Client to version 25.11 or later, which contains the fix for the file integrity validation bypass.
25.11
- Identify all Windows systems with TeamViewer DEX Client (formerly 1E client) installed
- Locate the Content Distribution Service (NomadBranch.exe) on affected systems
- Check the current version of NomadBranch.exe - versions prior to 25.11 are vulnerable
- Download TeamViewer DEX Client version 25.11 or later from the official TeamViewer website
- Upgrade the TeamViewer DEX Client to version 25.11 or newer on all affected systems
- Verify the installation by checking that NomadBranch.exe is now at version 25.11 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-44016 — 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-2025-44016 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
- No spam, self-promotion, credentials, or personal data