Input Validation Flaw in APTIOV BIOS by AMI

CVE-2025-33043

What is CVE-2025-33043?

CVE-2025-33043 is a security vulnerability identified in the APTIOV BIOS developed by American Megatrends International (AMI). This vulnerability is characterized by an input validation flaw that can be exploited locally by an attacker. The APTIOV BIOS serves a critical role in managing hardware-level interactions within computers, which makes its integrity paramount to the overall security of the system. If exploited, this vulnerability can allow attackers to manipulate inputs in a way that compromises the integrity of the BIOS, potentially leading to unauthorized access or broader system malfunctions. Given the foundational position of BIOS in the boot process and hardware initialization, any alteration could have cascading effects on the device's stability and security.

Potential impact of CVE-2025-33043

1. Compromise of System Integrity: An attacker could exploit this vulnerability to manipulate core functionalities of the system, leading to unauthorized modifications of data and potential system instability.

2. Increased Attack Surface: By compromising the BIOS, attackers can create persistent threats that survive operating system reinstalls, making further exploitation and malware deployment easier.

3. Risk of Data Breach: With direct access to BIOS controls, an attacker could potentially access sensitive information, which could lead to data breaches impacting both organizational confidentiality and reputation.

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