CVE-2025-62646 is a vulnerability identified in the Restaurant Brands International (RBI) assistant platform, which is used to facilitate interactions between associates and Drive Thru customers. The flaw is classified under CWE-669, indicating an incorrect resource transfer between security spheres, meaning that resources (in this case, stored audio files) are accessible beyond their intended security boundaries. Specifically, this vulnerability allows remote attackers who have some level of privileges (PR:L - privileges required) but no user interaction (UI:N) to review stored audio recordings of conversations. The CVSS 3.1 base score is 5.0 (medium severity), with an attack vector of network (AV:N), low attack complexity (AC:L), and a scope change (S:C), indicating that the vulnerability affects resources beyond the initially impacted component. The impact is limited to confidentiality (C:L), with no integrity or availability impact. The vulnerability is present in all versions up to 2025-09-06, with no patches currently listed. No known exploits have been reported in the wild. The exposure of audio recordings can lead to privacy breaches, potentially violating data protection regulations such as GDPR, and may result in reputational harm and loss of customer trust. The vulnerability highlights a failure in enforcing strict access control boundaries between different security domains within the platform, allowing unauthorized access to sensitive audio data.

For European organizations using the RBI assistant platform, this vulnerability poses a significant confidentiality risk. The unauthorized access to stored audio conversations can lead to exposure of personally identifiable information (PII) of customers and associates, potentially violating GDPR and other privacy regulations. This can result in legal penalties, regulatory scrutiny, and financial losses. Additionally, the leakage of customer interaction data can damage brand reputation and customer trust, especially in the competitive food service industry. Since the vulnerability requires some level of privilege but no user interaction, insider threats or compromised credentials could be leveraged to exploit this flaw remotely. The impact is particularly critical for franchises and operations in Europe where RBI brands have a strong presence, as these organizations handle large volumes of customer data daily. Furthermore, the scope change in the vulnerability means that attackers could access data beyond their initial access level, increasing the potential damage. Although availability and integrity are not affected, the confidentiality breach alone warrants urgent attention.

1. Implement strict role-based access controls (RBAC) to ensure that only authorized personnel can access stored audio recordings. 2. Conduct a thorough audit of current access permissions within the RBI assistant platform to identify and revoke unnecessary privileges. 3. Employ network segmentation to isolate the assistant platform and its storage systems from broader corporate networks, reducing the attack surface. 4. Monitor and log all access to audio storage resources, setting up alerts for anomalous or unauthorized access attempts. 5. Enforce multi-factor authentication (MFA) for all users with privileges that could access sensitive audio data. 6. Engage with RBI or platform vendors to obtain patches or security updates as soon as they become available. 7. If patches are not yet available, consider deploying compensating controls such as temporary disabling of remote access to audio storage or encrypting stored audio files at rest with strict key management. 8. Provide training and awareness to staff about the risks of credential compromise and insider threats. 9. Regularly review and update incident response plans to include scenarios involving unauthorized access to customer audio data. 10. Ensure compliance with GDPR and other relevant privacy regulations by documenting data handling and breach response procedures related to this vulnerability.