CVE-2025-63220 identifies a remote code execution vulnerability in the Sound4 FIRST web-based management interface. The root cause is the failure of the firmware update mechanism to validate the integrity of the manual.sh script included in firmware update packages. An attacker with high privileges can craft a malicious firmware update by modifying manual.sh to include arbitrary commands. When the firmware is applied, these commands execute with the privileges of the update process, potentially compromising the entire device. The vulnerability is categorized under CWE-494 (Download of Code Without Integrity Check), highlighting the lack of proper validation controls. The CVSS 3.1 base score of 7.2 reflects the network attack vector, low attack complexity, required privileges, and the high impact on confidentiality, integrity, and availability. Although no exploits are currently known in the wild, the vulnerability poses a significant risk due to the potential for full system compromise. The absence of patch links suggests that a fix may not yet be publicly available, increasing the urgency for organizations to implement compensating controls. The vulnerability affects all versions of Sound4 FIRST devices where this update mechanism is present, though specific version details are not provided.

For European organizations, this vulnerability could lead to severe consequences including unauthorized control over critical infrastructure managed via Sound4 FIRST devices. Attackers could execute arbitrary commands, leading to data breaches, system manipulation, or denial of service. Sectors such as utilities, manufacturing, and telecommunications that rely on these devices for operational technology management are particularly at risk. The compromise of these systems could disrupt services, cause financial losses, and damage reputations. Additionally, the ability to execute code remotely without user interaction increases the likelihood of targeted attacks or automated exploitation once a patch or exploit becomes available. The lack of current known exploits provides a window for proactive defense, but also means organizations must act before attackers develop weaponized code.

Organizations should immediately restrict access to the firmware update interface to trusted administrators only, employing strong authentication and network segmentation. Implement strict validation of firmware packages by verifying digital signatures or checksums before applying updates to ensure integrity. Monitor firmware update activities and system logs for any unauthorized or suspicious changes to manual.sh or related scripts. If possible, disable manual firmware updates temporarily until a patch or official guidance is released by the vendor. Engage with Sound4 FIRST support channels to obtain updates or patches addressing this vulnerability. Conduct regular security audits of device configurations and update mechanisms. Consider deploying intrusion detection systems capable of identifying anomalous command executions or firmware modifications. Finally, maintain an incident response plan tailored to potential device compromise scenarios.