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TI-2025-40181 Aliases CVE-2025-64990GHSA-xmxh-pm35-h64j

Command Injection in 1E-Explorer-TachyonCore-LogoffUser Instruction

Priority LOW 35CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Explorer-TachyonCore-LogoffUser instruction prior V21.1. Improper input validation, allowing authenticated attackers with Actioner privileges to inject arbitrary commands. Exploitation enables remote execution of elevated commands on devices connected to the platform.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00828 57th percentileScored 2026-11-07
Fix Fixed DEX (TeamViewer): 21.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TeamViewerDEXbefore 21.121.1Patch availableCNA
  • DEX VendorTeamViewer Affected before 21.1 Fixed in 21.1 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:*before 21.1VulnerableTeamViewer
  • cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:* Versions before 21.1 Vulnerable ·TeamViewer

Remediation

  • Fix · CNA DEX (TeamViewer) Fixed in 21.1

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    TeamViewer DEX 21.1

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2025-40180 Command Injection in 1E-Explorer-TachyonCore-FindFileBySizeAndHash InstructionPriority LOW 36
    Show all 2 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-64990
  2. 2026-10-03 Alias added: GHSA-xmxh-pm35-h64j

References

Advisory 1

  • TI-2025-28565 File Hash Validation Bypass in NomadBranch.exe CVSS 3.1HIGH 8.8
  • TI-2025-40180 Command Injection in 1E-Explorer-TachyonCore-FindFileBySizeAndHash Instruction CVSS 3.1HIGH 7.2
  • TI-2025-40179 Command Injection in 1E-Nomad-GetCmContentLocations Instruction CVSS 3.1HIGH 7.2
  • TI-2025-40178 Command Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC Instruction CVSS 3.1HIGH 7.2
  • TI-2025-40177 Command Injection in 1E-Explorer-TachyonCore-DevicesListeningOnAPort Instruction CVSS 3.1HIGH 7.2
  • TI-2026-18989 Out-of-bounds read vulnerability in Content Distribution Service CVSS 3.1HIGH 8.1
See all 21 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences