CVE-2025-24922 is a stack-based buffer overflow vulnerability identified in the securebio_identify function of Dell ControlVault3 and ControlVault3 Plus modules that incorporate the Broadcom BCM5820X chip. This vulnerability arises from improper bounds checking when processing a specially crafted cv_object, which can overflow the stack buffer and overwrite control data. An attacker with local privileges can invoke an API call to trigger this overflow, leading to arbitrary code execution within the context of the vulnerable service. The vulnerability is classified under CWE-121, indicating classic stack-based buffer overflow issues. The CVSS v3.1 score of 8.8 reflects high severity, with attack vector local (AV:L), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), and a scope change (S:C) that affects confidentiality, integrity, and availability (C:H/I:H/A:H). Although no public exploits are known at this time, the vulnerability's characteristics suggest it could be weaponized to gain persistent control over affected systems. The affected products are Dell ControlVault3 versions prior to 5.15.10.14 and ControlVault3 Plus prior to 6.2.26.36, which are embedded security modules used for biometric authentication and cryptographic operations in Dell enterprise laptops and workstations. The vulnerability's exploitation could undermine device security, allowing attackers to bypass authentication, extract sensitive credentials, or disrupt system operations.

For European organizations, the impact of CVE-2025-24922 is significant due to the widespread use of Dell enterprise laptops and workstations equipped with ControlVault3 modules in corporate, government, and critical infrastructure environments. Successful exploitation could lead to full system compromise, enabling attackers to steal sensitive intellectual property, personal data protected under GDPR, or disrupt business continuity. The vulnerability's ability to execute arbitrary code with elevated privileges threatens the integrity of authentication mechanisms and cryptographic protections, potentially allowing lateral movement within networks. This risk is heightened in sectors such as finance, healthcare, and public administration, where data confidentiality and system availability are paramount. Additionally, the scope change in the vulnerability means that exploitation could affect multiple components beyond the initial vulnerable module, amplifying the potential damage. Although no exploits are currently known in the wild, the vulnerability's characteristics make it a prime target for advanced persistent threat actors aiming at high-value European targets.

To mitigate CVE-2025-24922, European organizations should prioritize the deployment of vendor patches for Dell ControlVault3 and ControlVault3 Plus firmware as soon as they become available. In the interim, organizations should restrict access to the vulnerable API endpoints by implementing strict access controls and monitoring local privilege accounts for suspicious activity. Employing application whitelisting and endpoint detection and response (EDR) solutions can help detect anomalous behavior indicative of exploitation attempts. Network segmentation should be enforced to limit lateral movement if a device is compromised. Additionally, organizations should conduct thorough inventory assessments to identify all affected devices and ensure they are included in patch management cycles. Security teams should also review biometric authentication logs and cryptographic operations for irregularities. Finally, raising user awareness about the risks of privilege escalation and enforcing the principle of least privilege will reduce the attack surface.