CVE-2025-36600 in Client Platform BIOS
Summary
by MITRE • 07/08/2025
Dell Client Platform BIOS contains an Improper Access Control Applied to Mirrored or Aliased Memory Regions vulnerability in an externally developed component. A high privileged attacker with local access could potentially exploit this vulnerability, leading to Code execution.
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Analysis
by VulDB Data Team • 08/18/2025
The vulnerability identified as CVE-2025-36600 resides within the Dell Client Platform BIOS and represents a critical weakness in memory access control mechanisms. This flaw specifically affects externally developed components within the BIOS firmware, creating a dangerous pathway for privilege escalation attacks. The vulnerability manifests in how the system handles mirrored or aliased memory regions, which are common in modern computing architectures where memory addresses may map to multiple physical locations for performance or compatibility reasons. Such memory aliasing is typically managed through carefully controlled access policies, but this particular implementation fails to enforce proper access restrictions.
The technical exploitation of this vulnerability requires a high-privileged attacker with local system access, meaning the attacker must already have elevated privileges or physical access to the target system. However, the impact is severe as this flaw could enable code execution at a level that bypasses normal operating system security controls. The improper access control applied to mirrored or aliased memory regions creates potential for memory corruption or data manipulation that could be leveraged to execute arbitrary code with the highest system privileges. This type of vulnerability directly relates to CWE-284 which addresses improper access control, and more specifically aligns with CWE-119 which deals with memory corruption vulnerabilities that arise from improper handling of memory regions.
From an operational standpoint, this vulnerability poses significant risks to enterprise environments where Dell client platforms are deployed. The attack surface is particularly concerning because BIOS-level vulnerabilities can persist across system reboots and are often difficult to detect through conventional security monitoring. The impact extends beyond individual system compromise as attackers who successfully exploit this vulnerability could potentially establish persistent backdoors or escalate privileges to gain full administrative control over affected systems. The nature of BIOS-level attacks also means that traditional endpoint protection solutions may not detect or prevent exploitation, as these attacks operate at a level below the operating system.
Mitigation strategies for this vulnerability should focus on immediate firmware updates provided by Dell, as the vendor will likely release patched BIOS versions to address the memory access control implementation. Organizations should prioritize patching all affected Dell client platforms and implement strict access controls to limit local system access where possible. Security teams should also consider monitoring for unusual memory access patterns or system behavior that might indicate exploitation attempts, though detection remains challenging due to the low-level nature of the vulnerability. The ATT&CK framework would classify this vulnerability under T1068 for locally executed code and potentially T1542 for boot or logon initiation mechanisms, as the exploitation could occur during system boot processes or through memory manipulation techniques that bypass normal security controls.