CVE-2026-75811 in Armoury Crate
Summary
by MITRE • 09/08/2026
Improper Restriction of Software Interfaces to Hardware Features in ASUS Armoury Crate allows a local user to modify hardware configuration settings and potentially cause hardware damage by bypassing driver authentication and accessing critical model-specific registers.Refer to the ' Security Update for Armoury Crate App' section on the ASUS Security Advisory for more information.
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Analysis
by VulDB Data Team • 09/08/2026
The vulnerability identified in ASUS Armoury Crate represents a critical failure in access control mechanisms governing interactions between software applications and underlying hardware components. This flaw is categorized under CWE-749, which describes improper restriction of software interfaces to hardware features. The core technical issue stems from the application's ability to bypass standard driver authentication protocols when attempting to write to model-specific registers (MSRs) or other low-level hardware configuration settings. In a properly secured system, such operations require elevated privileges and strict validation to ensure that only authorized processes can alter critical firmware parameters. However, in this instance, the software interface exposes these sensitive endpoints without sufficient verification of the caller's identity or intent, allowing any local user with access to the operating system environment to invoke these functions directly.
From a technical perspective, model-specific registers are specialized CPU control structures that manage processor behavior, power states, and security features. Unauthorized modification of these registers can lead to unpredictable system behavior, including instability, data corruption, or permanent hardware degradation if extreme voltage or frequency settings are applied incorrectly. The vulnerability effectively grants local users the capability to manipulate hardware configurations that should be restricted to kernel-level drivers with explicit administrative rights. This bypass of authentication mechanisms undermines the principle of least privilege and creates a direct path for malicious actors within the system boundary to alter fundamental operational parameters without detection by standard security controls.
The operational impact of this vulnerability is severe, particularly in environments where multiple users share a single workstation or server running ASUS Armoury Crate. A local attacker could exploit this flaw to overclock components beyond safe limits, disable hardware-level security features such as Intel TXT or AMD SVM, or otherwise destabilize the system by misconfiguring power management settings. In worst-case scenarios, improper configuration of voltage regulators or thermal thresholds through these registers can lead to physical damage to CPU, GPU, or motherboard components due to overheating or electrical stress. This transforms a software-level flaw into a potential hardware destruction vector, significantly elevating the risk profile beyond typical privilege escalation vulnerabilities that primarily affect data confidentiality and integrity.
This vulnerability aligns with MITRE ATT&CK technique T1059, specifically sub-techniques related to command and script interpreters or system services abuse, as it involves leveraging legitimate software interfaces for unauthorized hardware manipulation. It also reflects aspects of CWE-269 regarding improper privilege management, where the application fails to enforce appropriate access controls on sensitive operations. The ability to modify critical model-specific registers bypasses traditional endpoint protection mechanisms that rely on process-level monitoring rather than deep system call inspection or hardware interface validation.
Mitigation strategies must focus on restricting access to these vulnerable interfaces and ensuring proper authentication checks are enforced at the driver level. Users should immediately apply the security update provided by ASUS for Armoury Crate, which addresses this flaw by implementing stricter access controls and validating user permissions before allowing modifications to hardware settings. System administrators should enforce strict local account policies, limiting administrative privileges to trusted personnel only. Additionally, enabling hardware-enforced stack protection and monitoring tools that detect unusual MSR write operations can provide an additional layer of defense against exploitation attempts until the software patch is fully deployed across all affected systems.