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

published 2025-12-11 10 mo ago modified 2026-10-08 32 d ago also EUVD-2025-202677

cvss: 7.2; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.2%; EPSS 1.2% chance of exploitation in 30 days, percentile 67%
public exploits: 0; none known

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.

Patch / fix

fixed in 1

teamviewer digital_employee_experience 21.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 10 mo ago (2025-12-11)

Exploit prediction

1.16% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.2	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

TeamViewer DEX

Classification

Weakness

CWE-20 Improper Input Validation
CWE-77 Improper Neutralization of Special Elements used in a Command

References

teamviewer.com /en/resources/trust-center/security-bulletins/tv-2025-1006/
vendor-advisory

Sources

CVE List CVE-2025-64987
NVD CVE-2025-64987

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary