Description

Use after free in Windows Autopilot allows an authorized attacker to elevate privileges locally.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "7.0",
  "pubDate": "2026-08-11T17:18:57.810Z",
  "pubdate": "2026-08-11T17:18:57.810Z",
  "executiveSummary": "A use-after-free vulnerability exists in Windows Autopilot that allows an authorized local attacker to elevate privileges on targeted systems. The vulnerability resides within memory management routines handling object lifecycles in the affected component. If successfully exploited, a threat actor can achieve local privilege escalation, potentially granting them higher integrity levels such as SYSTEM access. The attack requires local access to the target machine and relies on the attacker already possessing a certain level of authorization to interact with the vulnerable component. Risk implications include complete compromise of the local operating system, unauthorized modification of system resources, and potential persistence mechanisms established by the elevated process. Remediation requires applying official vendor patches as soon as they become available to correct the underlying memory management flaw and prevent unauthorized object manipulation.",
  "technicalDetails": "The vulnerability is classified as a use-after-free condition stemming from improper handling of dynamic memory allocation and deallocation within Windows Autopilot. Specifically, the vulnerable component fails to properly nullify or manage pointers after releasing the underlying memory buffers associated with specific internal objects. This creates a window of vulnerability where a dangling pointer can be referenced after the memory has been freed or repurposed for other data structures.\nExploitation of this flaw requires an authorized attacker to execute code locally on the target system. The attack flow generally proceeds as follows: First, the attacker interacts with the vulnerable Windows Autopilot component or API to trigger the allocation and subsequent deallocation of a specific target object. Second, through precise heap manipulation and grooming techniques, the attacker forces the application to reuse the newly freed memory chunk with attacker-controlled data or specially crafted structures. Third, by triggering a subsequent operation that references the dangling pointer, the application inadvertently executes attacker-supplied data or jumps to arbitrary memory locations pointed to by the manipulated structure.\nBecause the execution context of the vulnerable component often runs with elevated privileges, successfully directing the instruction pointer or manipulating function pointers via the freed memory allows the attacker to execute arbitrary code within that high-integrity context. The attack vector is strictly local, requiring the attacker to have initial execution capability on the host. Network exposure is not a direct factor in the initial exploitation phase, as the flaw resides in local OS components. Post-exploitation impact includes full local privilege escalation, bypass of local security controls, and potential lateral movement or full system takeover depending on the attacker's objectives and the privileges of the compromised context."
}