CVE-2025-64987 is a command injection vulnerability identified in TeamViewer DEX (formerly 1E DEX), specifically within the 1E-Explorer-TachyonCore-CheckSimpleIoC instruction. The root cause is improper input validation (CWE-20), which allows attackers who have authenticated access with Actioner privileges to inject arbitrary commands. This flaw enables remote execution of commands with elevated privileges on devices connected to the TeamViewer DEX platform. The vulnerability does not require user interaction but does require the attacker to have authenticated access with specific privileges, which implies a need for prior compromise or insider threat. The CVSS 3.1 base score is 7.2, reflecting a high severity due to network attack vector (AV:N), low attack complexity (AC:L), high privileges required (PR:H), no user interaction (UI:N), unchanged scope (S:U), and high impact on confidentiality, integrity, and availability (C:H/I:H/A:H). No patches or public exploits are currently available, but the potential for elevated command execution on connected devices poses a significant risk. The vulnerability affects version '0' of the product, which likely indicates initial or early versions, suggesting that organizations running early deployments are at risk. The lack of patches necessitates immediate mitigation through compensating controls. The vulnerability is critical in environments where TeamViewer DEX is used for device management or remote operations, as it could allow attackers to execute arbitrary commands, potentially leading to data breaches, system compromise, or disruption of services.

For European organizations, the impact of CVE-2025-64987 can be severe. TeamViewer DEX is used for remote device management and IT operations, so exploitation could lead to unauthorized control over critical systems. This could result in data exfiltration, disruption of business processes, or deployment of further malware. Confidentiality is at risk due to potential access to sensitive data, integrity is compromised by unauthorized command execution, and availability may be affected if systems are disrupted or taken offline. Sectors such as finance, healthcare, manufacturing, and critical infrastructure are particularly vulnerable due to their reliance on remote management tools and the sensitivity of their data. The requirement for authenticated access with Actioner privileges limits the attack surface but also highlights the importance of internal threat vectors and credential security. The absence of known exploits in the wild provides a window for proactive defense, but the high severity score demands urgent attention to prevent potential exploitation.

1. Immediately review and restrict Actioner privilege assignments within TeamViewer DEX to the minimum necessary personnel. 2. Implement strict authentication controls, including multi-factor authentication (MFA), to reduce the risk of credential compromise. 3. Monitor and audit all commands executed via TeamViewer DEX for unusual or unauthorized activity, using SIEM solutions with tailored detection rules. 4. Segment the network to isolate systems managed via TeamViewer DEX, limiting lateral movement in case of compromise. 5. Apply application whitelisting and endpoint protection to detect and block unauthorized command execution. 6. Engage with TeamViewer for updates or patches and plan for immediate deployment once available. 7. Conduct regular security awareness training focusing on credential security and insider threat risks. 8. Consider temporary suspension or alternative solutions for remote management if risk cannot be adequately mitigated. 9. Maintain up-to-date backups and incident response plans tailored to remote management compromise scenarios.