CVE-2022-46404 is a command injection vulnerability affecting Atos Unify OpenScape 4000 Assistant and Unify OpenScape 4000 Manager software versions prior to R2.22.18 for version 8, prior to 0.28.13 for version 10, and prior to R1.34.4 for version 10 R1. This vulnerability allows an unauthenticated attacker to upload arbitrary files to the system, which can lead to the execution of arbitrary commands with administrative privileges. The root cause is related to improper input validation and sanitization, classified under CWE-77 (Improper Neutralization of Special Elements used in a Command). Because the attacker does not require authentication, the attack surface is significantly increased, allowing remote exploitation without user interaction. The vulnerability impacts critical telecommunication management systems used for unified communications and voice infrastructure management. Exploitation could lead to full system compromise, including unauthorized administrative access, data manipulation, and potential disruption of telephony services. No public exploits have been reported in the wild as of the published date, and no official patches or mitigation links were provided in the source information. The medium severity rating likely reflects the balance between the high impact of administrative access and the complexity or likelihood of exploitation in real-world scenarios.

For European organizations, the impact of this vulnerability is significant, particularly for enterprises and service providers relying on Atos Unify OpenScape 4000 systems for their telephony and unified communications infrastructure. Successful exploitation could result in unauthorized administrative control, enabling attackers to manipulate call routing, intercept communications, disrupt service availability, or exfiltrate sensitive information. This could lead to operational downtime, financial losses, reputational damage, and potential regulatory compliance violations under GDPR due to compromised confidentiality and integrity of communications data. Critical sectors such as government, finance, healthcare, and large enterprises that depend on reliable voice communications are especially at risk. Additionally, the unauthenticated nature of the vulnerability increases the risk of automated scanning and exploitation attempts, potentially leading to widespread impact if not mitigated promptly.

Given the lack of official patches or updates referenced, European organizations should implement immediate compensating controls. These include restricting network access to the affected management interfaces by implementing strict firewall rules and network segmentation to limit exposure only to trusted administrative networks. Employing intrusion detection and prevention systems (IDS/IPS) with signatures or anomaly detection for command injection patterns can help identify exploitation attempts. Regularly auditing and monitoring logs for unusual file uploads or administrative actions is critical. Organizations should also engage with Atos support channels to obtain the latest patches or firmware updates addressing this vulnerability. Where possible, disable or restrict the use of the vulnerable OpenScape 4000 Assistant and Manager components until patches are applied. Additionally, enforcing strong authentication and multi-factor authentication on management interfaces, even if the vulnerability allows unauthenticated access, can help reduce risk from other attack vectors. Finally, conducting internal penetration testing focused on this vulnerability can help validate the effectiveness of mitigations.