CVE-2025-46266: TeamViewer DEX · Improper Input Validation
Affects TeamViewer DEXSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium.
Data as of 26 Oct 2026, 09:15 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 11 Dec 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| TeamViewer DEX | Affected
| Fixed in– |
AI-suggested
Organizations should prioritize upgrading TeamViewer DEX Client to version 25.11 or later once the patch is officially released. Until then, network segmentation should be enforced to restrict access to the Content Distribution Service (NomadBranch.exe) from untrusted or less secure network segments. Implement strict firewall rules to limit which internal IP addresses the service can communicate with, preventing arbitrary redirection. Monitoring network traffic for unusual data flows originating from the TeamViewer DEX service can help detect exploitation attempts. Additionally, review and harden internal network access controls and consider disabling or restricting the Content Distribution Service if not essential. Regularly audit TeamViewer DEX deployments and maintain up-to-date inventories to ensure vulnerable versions are identified and remediated promptly.
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 coerce the service into transmitting data to an arbitrary internal IP address, potentially leaking sensitive information.