Description

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.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.8",
  "pubDate": "2026-10-05T19:17:24.423Z",
  "pubdate": "2026-10-05T19:17:24.423Z",
  "executiveSummary": "This vulnerability is characterized as an out-of-bounds (OOB) write flaw resulting from improper validation of input boundaries.\nThe vulnerability resides within the system software, potentially allowing a local unprivileged attacker to gain elevated system privileges.\nThe flaw manifests due to insufficient bounds checking, which enables an attacker to perform write operations outside the intended memory buffers.\nExploitation does not require user interaction or pre-existing execution privileges, making it a critical threat for local security.\nSuccessful exploitation facilitates unauthorized privilege escalation, granting the attacker higher levels of system control than originally assigned.\nThe absence of requirements for interaction or specific privileges increases the severity, as it can be leveraged by local malicious entities to compromise system integrity and confidentiality.",
  "technicalDetails": "The root cause of this vulnerability is an inadequate implementation of bounds verification logic during memory write operations across multiple code locations.\nThe software fails to enforce strict limits on the memory address space during write procedures, allowing data to be written beyond the allocated buffer boundaries into adjacent memory regions.\nThe exploitation process involves an attacker supplying specifically crafted input that triggers these weak bounds checks. By manipulating the offset indices or the size parameters provided to the vulnerable functions, the attacker forces the memory write operation to occur outside the intended target destination.\nSince the vulnerability involves an OOB write, an attacker can overwrite sensitive data structures, control flow pointers, or other critical kernel-mode or high-privilege objects located in the contiguous memory space following the vulnerable buffer.\nIn terms of attack flow, the attacker initiates a local process that interacts with the vulnerable component, triggering the improper memory write. Once the memory is corrupted, the attacker can redirect execution flow by overwriting return addresses or function pointers, subsequently redirecting the CPU to execute arbitrary code or shellcode payloads with the privileges of the compromised process or kernel.\nBecause this vulnerability is local and requires no user interaction, it represents a significant vector for vertical privilege escalation. The vulnerability does not require authentication or elevated execution privileges prior to exploitation, effectively allowing a standard user to elevate their security context to that of a system administrator or kernel-level process.\nPost-exploitation impact includes full system compromise, the ability to bypass security controls, and the potential for persistent unauthorized access to protected system resources."
}