Command Injection in 1E-Explorer-TachyonCore-CheckSimpleIoC Instruction
Priority LOW 36CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-77.
Summary
A command injection vulnerability was discovered in TeamViewer DEX (former 1E DEX), specifically within the 1E-Explorer-TachyonCore-CheckSimpleIoC instruction. 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 0.01161 67th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| TeamViewer | DEX | up to 21 | — | No fix listed | CNA |
- DEX VendorTeamViewer Affected up to 21 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:* | before 21.0 | Vulnerable | TeamViewer |
- cpe:2.3:a:teamviewer:digital_employee_experience:*:*:*:*:*:*:*:* Versions before 21.0 Vulnerable ·TeamViewer
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-64987
- 2026-10-03 Alias added: GHSA-3hmw-h9hw-mx39
References
More TeamViewer Digital Employee Experience vulnerabilities
- 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-2025-40177 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
- TI-2025-40184 Command Injection in 1E-ConfigMgrConsoleExtensions Instructions CVSS 3.1HIGH 7.2
Sources
- CVE-2025-64987 · CVE Program
- CVE-2025-64987 · NVD
- FIRST EPSS
- GHSA-3hmw-h9hw-mx39 · GitHub Advisory Database · CC BY 4.0
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