CVE-2026-58815 in Android
Summary
by MITRE • 10/05/2026
In multiple locations, there is a possible out of bounds write due to an incorrect bounds check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
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Analysis
by VulDB Data Team • 10/05/2026
The vulnerability described constitutes a critical memory corruption flaw characterized by an improper validation of array or buffer boundaries during data processing operations. Specifically, the software fails to correctly verify that input indices or lengths remain within the allocated limits before performing write operations into memory structures. This logical error allows for out-of-bounds writes, where data is written beyond the intended destination buffer and potentially overwrites adjacent memory regions. Such corruption can alter critical program state variables, overwrite return addresses on the stack, or corrupt heap metadata depending on the specific allocation context. The absence of rigorous bounds checking creates a direct pathway for attackers to manipulate the control flow of the application or compromise the integrity of system-level data structures that are not subject to standard user-space protections.
From an operational impact perspective, this flaw facilitates local privilege escalation without requiring any prior authentication or interaction from a legitimate user. Because exploitation does not depend on social engineering tactics such as clicking malicious links or opening specific files, the attack surface is significantly expanded. An attacker with access to the system, even at a low-privilege level, can trigger the vulnerable code path through automated scripts or background processes that interact with the affected component. Once triggered, the out-of-bounds write enables the execution of arbitrary code within the context of the compromised process. If this process runs with elevated privileges, such as root on Unix-like systems or SYSTEM on Windows, the attacker gains full control over the operating system. This effectively bypasses standard access controls and allows for complete compromise of confidentiality, integrity, and availability of the affected environment.
In terms of industry-standard classification frameworks, this vulnerability aligns closely with CWE-787: Out-of-bounds Write, which defines the condition where a write operation targets memory beyond the bounds of an allocated buffer. It also relates to CWE-125: Out-of-bounds Read if the flaw involves reading adjacent data during the validation phase that leads to incorrect assumptions about safe boundaries. Furthermore, from a tactical perspective within the MITRE ATT&CK framework, this vulnerability supports techniques associated with Initial Access and Privilege Escalation. Specifically, it enables exploitation vectors similar to T1068: Exploitation for Privilege Escalation, where attackers leverage software vulnerabilities to gain higher-level permissions. The lack of user interaction places this in the category of remote or automated exploitability if the vulnerable service is network-exposed, though here it is specified as local escalation, implying a trusted boundary assumption that is violated by malicious internal actors or compromised low-privilege accounts.
Mitigation strategies must focus on both immediate patching and long-term architectural improvements to prevent recurrence. The primary remediation involves applying vendor-provided security updates that correct the bounds checking logic in the affected software components. Developers should implement rigorous input validation routines that explicitly check array indices, string lengths, and buffer sizes against their allocated limits before any memory access occurs. Adopting secure coding practices such as using safe libraries for string manipulation and memory allocation can reduce the risk of similar errors. Additionally, enabling compiler-based security features like Stack Canaries (Stack Smashing Protection), Address Space Layout Randomization (ASLR), and Data Execution Prevention (DEP) provides essential layers of defense-in-depth that can mitigate exploitation even if a vulnerability exists. Regular static analysis using tools configured to detect CWE-787 patterns during the development lifecycle is recommended to identify such logical flaws early, ensuring that boundary conditions are rigorously tested before deployment into production environments.