CVE-2026-58678 in Android
Summary
by MITRE • 09/15/2026
In Bootloader, there is a possible permission bypass due to a logic error in the code. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 09/15/2026
The identified vulnerability resides within the bootloader subsystem of the affected device architecture and represents a critical security flaw characterized by a logic error that facilitates unauthorized permission bypasses. Bootloaders serve as the foundational software component responsible for initializing hardware, verifying system integrity through secure boot processes, and loading the operating kernel into memory. Due to their position at the lowest level of the software stack, they operate with elevated privileges often equivalent to or exceeding those of the main operating system kernel. The specific logic error in question allows an attacker to circumvent access control mechanisms that are designed to restrict certain operations or data accesses during the early stages of device initialization. This flaw effectively undermines the integrity checks and privilege separation models intended to prevent unauthorized modifications to critical system components, thereby creating a pathway for malicious actors to gain deeper levels of system access than originally permitted by the security policy.
The operational impact of this vulnerability is severe due to its potential for local escalation of privileges to System execution level. Because the flaw exists in the bootloader, exploitation does not require user interaction or physical presence at the device interface during runtime; rather, it can be triggered through specific hardware states, boot configurations, or pre-boot environments that are accessible without active user engagement. Once exploited, an attacker gains full control over the system with System execution privileges, which typically equate to root or administrator-level access on most operating systems. This level of access allows for complete compromise of device confidentiality, integrity, and availability. The adversary can install persistent malware, exfiltrate sensitive data stored in protected partitions, modify firmware updates to introduce backdoors that survive factory resets, and disable security features such as encryption or secure boot protections. Furthermore, because the bootloader executes before the operating system loads, traditional endpoint detection and response tools are often ineffective at identifying or mitigating attacks originating from this layer.
From a classification perspective, this vulnerability aligns with CWE-269 Improper Privilege Management, specifically where an actor obtains privileges they should not have due to flawed logic in access control decisions. It also relates closely to CWE-841 Improvement of Software Security Permissions and CWE-754 Improper Check for Unusual or Exceptional Conditions if the error stems from failing to validate expected states during boot sequence validation. In terms of offensive security frameworks, this exploit vector maps directly to MITRE ATT&CK technique T1068 Exploitation for Privilege Escalation, with specific relevance to firmware and hardware-level attacks such as those described under T1531 Accessing Component Firmware or T1497 Virtualization/Sandbox Evasion if the bootloader environment is used to hide malicious activities from host-based security monitors. The lack of user interaction further categorizes this under automated exploitation vectors that can be triggered remotely via connected peripherals or during specific boot triggers, increasing the attack surface significantly beyond traditional software-only vulnerabilities.
Mitigation strategies for this type of vulnerability require a multi-layered approach focusing on both immediate patching and long-term architectural improvements. The primary remediation involves applying vendor-provided firmware updates that correct the logic error within the bootloader code. These patches typically involve tightening access control checks, ensuring that privilege escalation paths are explicitly denied unless specific cryptographic signatures or hardware-based trust anchors validate the request. Organizations should prioritize updating devices to versions where this flaw is addressed and verify that secure boot chains remain intact post-update. Additionally implementing strict device management policies can help mitigate risk by restricting which bootloader configurations are permitted in production environments, such as disabling developer modes or fastboot interfaces on managed endpoints. For high-security deployments, hardware-based root of trust solutions like Trusted Platform Modules (TPM) should be leveraged to ensure that any changes to the boot process are cryptographically verified before execution proceeds. Continuous monitoring for anomalous bootloader behavior and regular audits of firmware integrity can also provide early detection indicators for potential exploitation attempts targeting this specific weakness.