CVE-2025-4740 is a medium-severity vulnerability affecting BeamCtrl Airiana version 11.0 and earlier. The vulnerability arises from insecure deserialization in an unspecified component related to the file 'coef'. Deserialization vulnerabilities occur when untrusted data is used to reconstruct objects, potentially allowing attackers to manipulate the process and execute arbitrary code or alter application logic. In this case, the vulnerability requires local access with low privileges (PR:L) and does not require user interaction (UI:N). The attack vector is local (AV:L), meaning an attacker must have some form of local access to the system running BeamCtrl Airiana. The vulnerability impacts confidentiality, integrity, and availability to a low degree (VC:L, VI:L, VA:L), indicating potential for limited unauthorized data disclosure, modification, or service disruption. The CVSS 4.0 base score is 4.8, reflecting a medium severity level. No public exploit has been confirmed in the wild, but the exploit details have been disclosed, increasing the risk of exploitation by local attackers. The vulnerability does not require elevated privileges to exploit, but the attacker must have local access, which limits the attack surface primarily to insiders or compromised local accounts. BeamCtrl Airiana is a specialized product, and the exact nature of the 'coef' file and its role in the application is not detailed, but the deserialization flaw suggests that untrusted input is processed insecurely, which is a common vector for remote code execution or privilege escalation in other contexts. However, the local access requirement and low impact on confidentiality, integrity, and availability reduce the overall risk compared to remote vulnerabilities.

For European organizations using BeamCtrl Airiana 11.0 or earlier, this vulnerability poses a moderate risk primarily from insider threats or attackers who have gained local access through other means (e.g., phishing leading to local account compromise). The potential impact includes unauthorized data manipulation, limited data leakage, or disruption of service components related to the vulnerable deserialization process. Since BeamCtrl Airiana is likely used in industrial control or specialized environments, any disruption or manipulation could affect operational processes, potentially leading to downtime or incorrect system behavior. However, the local access requirement and medium severity reduce the likelihood of widespread impact. Organizations with strict access controls and monitoring of local user activities will be less affected. The vulnerability could be leveraged as part of a multi-stage attack chain, where an attacker first gains local access and then exploits this flaw to escalate privileges or persist within the system. European organizations in sectors such as manufacturing, utilities, or critical infrastructure that deploy BeamCtrl Airiana should be particularly vigilant, as operational technology environments often have unique security challenges and may be targeted by sophisticated threat actors.

1. Apply patches or updates from BeamCtrl as soon as they become available to address CVE-2025-4740. Since no patch links are currently provided, maintain close contact with the vendor for updates. 2. Restrict local access to systems running BeamCtrl Airiana to trusted personnel only, implementing strict access controls and user authentication mechanisms. 3. Monitor and audit local user activities for unusual behavior that could indicate exploitation attempts, including unexpected deserialization operations or file manipulations related to 'coef'. 4. Employ application whitelisting and endpoint protection solutions that can detect or block suspicious deserialization patterns or unauthorized code execution attempts. 5. Conduct regular security training for staff with local access to raise awareness about the risks of local exploitation and the importance of safeguarding credentials. 6. If feasible, isolate BeamCtrl Airiana systems from general-purpose user environments to reduce the risk of local compromise. 7. Implement network segmentation and least privilege principles to limit the potential impact of a local compromise spreading to other systems. 8. Review and harden configurations related to deserialization processes within BeamCtrl Airiana, if configurable, to reject or validate untrusted input robustly.