CVE-2025-48515 in Ryzen 4000 Mobile Processors with Radeon Graphics
Summary
by MITRE • 02/10/2026
Insufficient parameter sanitization in AMD Secure Processor (ASP) Boot Loader could allow an attacker with access to SPIROM upgrade to overwrite the memory, potentially resulting in arbitrary code execution.
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Analysis
by VulDB Data Team • 02/11/2026
The vulnerability identified as CVE-2025-48515 resides within the AMD Secure Processor (ASP) Boot Loader component, representing a critical security weakness that undermines the integrity of system firmware initialization processes. This flaw manifests in insufficient parameter sanitization during the SPIROM upgrade procedure, creating a pathway for malicious actors to manipulate memory contents through crafted firmware updates. The ASP serves as a fundamental security element in AMD-based systems, responsible for establishing secure boot chains and protecting against unauthorized firmware modifications. When an attacker gains access to the SPIROM upgrade interface, they can exploit this vulnerability to overwrite critical memory regions, effectively compromising the system's security foundation.
The technical implementation of this vulnerability stems from inadequate input validation within the boot loader's parameter processing logic. The ASP Boot Loader fails to properly sanitize parameters received during firmware upgrade operations, allowing malformed or malicious input to bypass validation checks. This insufficient sanitization creates a direct memory corruption vector where attacker-controlled data can be written to arbitrary memory locations within the secure processor's address space. The vulnerability specifically targets the SPIROM upgrade mechanism, which is designed to facilitate legitimate firmware updates but becomes exploitable when parameter validation is weak. According to CWE classification, this represents a variant of CWE-707: Improper Neutralization of Input During Web Page Generation, though adapted to the firmware context, and may also align with CWE-121: Stack-based Buffer Overflow or CWE-787: Out-of-bounds Write depending on implementation details.
The operational impact of CVE-2025-48515 extends beyond simple privilege escalation to encompass complete system compromise and persistent backdoor establishment. An attacker with physical access to the SPIROM upgrade interface can execute arbitrary code within the ASP environment, potentially enabling them to bypass hardware security features, modify secure boot chains, or establish persistent access points. This vulnerability undermines the fundamental security model of the AMD Secure Processor, which is designed to provide trusted execution environments and protect against firmware-level attacks. The implications are particularly severe in enterprise and industrial environments where firmware integrity is paramount for maintaining security postures. The attack vector requires physical access to the SPIROM upgrade interface, but once achieved, provides a direct pathway to system compromise that can persist across reboots and is difficult to detect through traditional security monitoring mechanisms. Organizations relying on AMD-based systems for security-sensitive applications face significant risk from this vulnerability.
Mitigation strategies for CVE-2025-48515 must address both the immediate security gap and the broader firmware security landscape. The primary recommendation involves implementing robust parameter validation and sanitization within the ASP Boot Loader to prevent malicious input from being processed. Organizations should also enforce strict physical access controls to systems containing SPIROM upgrade interfaces, limiting access to authorized personnel only. Firmware update procedures should be secured through cryptographic validation and integrity checks to prevent unauthorized modifications. Network segmentation and monitoring solutions should be deployed to detect unusual firmware update activities or memory modification patterns. Additionally, regular firmware updates from AMD should be implemented promptly to address the underlying vulnerability. The ATT&CK framework categorizes this vulnerability under T1068: Exploitation for Privilege Escalation and T1542: Pre-OS Boot, highlighting the persistent nature of the threat and the need for comprehensive endpoint security measures. System administrators should also consider implementing hardware security modules and trusted platform modules to provide additional layers of protection against firmware-level attacks.