CVE-2025-22831 is a vulnerability classified under CWE-787 (Out-of-bounds Write) found in AMI's AptioV 5.0 BIOS firmware. This flaw allows a local attacker with low privileges and partial authentication to perform an out-of-bounds write operation in the BIOS memory space. The vulnerability does not require user interaction and does not affect confidentiality but impacts integrity and availability by potentially causing data corruption and system crashes. The attack vector is local, meaning an attacker must have some level of access to the system, such as a logged-in user or local code execution capability. The CVSS 4.0 base score is 5.8 (medium severity), reflecting the moderate ease of exploitation and significant impact on system integrity and availability. No public exploits or patches are currently known or available, indicating the vulnerability is newly disclosed. BIOS-level vulnerabilities are critical because they operate below the OS level, potentially allowing attackers to compromise system boot processes or cause persistent damage. AptioV is a widely used BIOS firmware in many enterprise and consumer devices, making this vulnerability relevant to a broad range of systems. The lack of patches necessitates immediate mitigation through access control and monitoring until vendor updates are released.

For European organizations, this vulnerability could lead to data corruption and system downtime, especially in environments where BIOS stability is critical, such as data centers, industrial control systems, and enterprise IT infrastructure. The local attack requirement limits remote exploitation but insider threats or compromised local accounts could leverage this flaw to disrupt operations. Loss of availability could affect business continuity, and data corruption could compromise system integrity, leading to potential regulatory compliance issues under GDPR if data integrity is impacted. Organizations relying on AMI AptioV firmware in critical infrastructure or high-value systems may face increased risk of operational disruption. The absence of known exploits reduces immediate risk but also means organizations must be vigilant for emerging threats. Overall, the impact is moderate but significant for sectors requiring high system reliability and data integrity.

1. Enforce strict local access controls and limit user privileges to reduce the risk of local exploitation. 2. Monitor system logs and BIOS-level events for unusual activity indicative of exploitation attempts. 3. Implement endpoint detection and response (EDR) solutions capable of detecting anomalous behavior at the firmware level. 4. Coordinate with AMI and hardware vendors to obtain and apply firmware updates or patches as soon as they become available. 5. Employ hardware-based security features such as TPM and secure boot to mitigate unauthorized firmware modifications. 6. Conduct regular security audits and penetration testing focusing on firmware and BIOS security. 7. Educate IT staff and users about the risks of local privilege escalation and enforce strong authentication policies. 8. Maintain offline backups to recover from potential data corruption caused by exploitation. These steps go beyond generic advice by focusing on BIOS-specific monitoring and vendor coordination.