CVE-2025-62648 identifies an incorrect authorization vulnerability (CWE-863) in the Restaurant Brands International assistant platform, specifically affecting the Drive Thru speaker audio volume control. This flaw allows remote attackers who have some level of privileges (PR:L) but do not require user interaction (UI:N) to adjust the audio volume of Drive Thru speakers. The vulnerability arises because the platform fails to properly enforce authorization checks before permitting changes to audio settings, which can lead to unauthorized modification of critical operational parameters. The CVSS v3.1 score of 6.4 reflects a medium severity, with attack vector being network-based (AV:N), low attack complexity (AC:L), and scope change (S:C), indicating that the vulnerability affects resources beyond the initially vulnerable component. The impact primarily affects availability (A:L) by potentially disrupting communication between customers and staff at Drive Thru points, and confidentiality is minimally impacted (C:L) since the vulnerability does not expose sensitive data. Integrity is not affected (I:N). No patches or known exploits are currently reported, but the vulnerability's presence in a customer-facing system makes it a concern for operational reliability and customer service quality. The assistant platform is likely integrated into RBI's global operations, including brands such as Burger King, Tim Hortons, and Popeyes, which have a significant footprint in Europe.

For European organizations operating RBI franchises, this vulnerability could disrupt Drive Thru operations by allowing unauthorized volume adjustments, potentially causing communication failures between customers and staff. This can lead to degraded customer experience, operational delays, and possible revenue loss during peak hours. While the confidentiality impact is low, the availability impact could affect service continuity and brand reputation. The scope change means that the vulnerability could allow attackers to affect components beyond the initial system, possibly impacting other integrated services or devices connected to the assistant platform. Given the reliance on Drive Thru services in fast-food chains, especially in urban and high-traffic locations, the operational impact could be significant. Additionally, unauthorized control of audio systems could be leveraged in social engineering or physical security bypass attempts. The lack of known exploits reduces immediate risk but does not eliminate the threat, especially as attackers may develop exploits post-disclosure.

1. Implement strict role-based access control (RBAC) on the assistant platform to ensure only authorized personnel can modify Drive Thru audio settings. 2. Monitor and log all configuration changes to the assistant platform, with alerts for unauthorized or unusual volume adjustments. 3. Network segmentation should isolate the assistant platform from broader corporate networks to limit attack surface and lateral movement. 4. Employ multi-factor authentication (MFA) for access to the assistant platform management interfaces to reduce risk from compromised credentials. 5. Conduct regular security audits and penetration testing focused on authorization controls within the platform. 6. Engage with Restaurant Brands International for timely patches or updates once available, and apply them promptly. 7. Train staff to recognize and report unusual Drive Thru audio behavior that may indicate exploitation attempts. 8. Consider deploying anomaly detection systems that can identify abnormal audio volume changes or access patterns in real time.