# CVE-2026-70156: Microsoft Windows Search Component use-after-free privilege escalation

Source: https://junglewise.ai/threats/cve-2026-70156-use-after-free-in-microsoft-windows-search-component-allows-an  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-10-13. Updated: 2026-10-16  
License: CC BY 4.0 with a link back

CVE-2026-70156 · Severity: high · CVSS 7 · Published 2026-10-13

Microsoft Windows Search is a system component that indexes files and enables fast local search functionality. A use-after-free vulnerability in this component allows an authenticated attacker with local access to execute code with elevated privileges, potentially taking full control of the system.

Technologies: [Microsoft Windows Search Component](https://junglewise.ai/threats/technologies/windows-search-component). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-70156 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-70156 being exploited in the wild.

**How severe is CVE-2026-70156?** High severity, with a CVSS score of 7, published 13 October 2026.

**Which products and versions are affected?** Microsoft Windows Search Component.

**Is there a fix for CVE-2026-70156?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-70156 attacked?** It is attacked with local access.

**Am I affected by CVE-2026-70156?** Check whether you run Microsoft Windows Search Component. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A use-after-free vulnerability exists in the Windows Search component that can be triggered by an authorized local attacker. The vulnerability allows memory corruption leading to arbitrary code execution with elevated privileges. Exploitation requires prior authentication and local access to the system.

## Affected products

- Microsoft Windows Search Component

## Timeline

- 2026-10-13: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70156](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70156)

## Related threats

- [Microsoft Windows Search Component absolute path traversal](https://junglewise.ai/threats/cve-2026-119954-absolute-path-traversal-in-microsoft-windows-search-component)
- [Microsoft Windows Search Component buffer over-read privilege escalation](https://junglewise.ai/threats/cve-2026-119943-buffer-over-read-in-microsoft-windows-search-component-allows-an)
- [Microsoft Windows Search Component symlink privilege escalation](https://junglewise.ai/threats/cve-2026-96911-improper-link-resolution-before-file-access-link-following-in)
- [Microsoft Windows Search Component heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-85869-heap-based-buffer-overflow-in-microsoft-windows-search-component)
- [Microsoft Windows Search Component heap buffer overflow](https://junglewise.ai/threats/cve-2026-83725-heap-based-buffer-overflow-in-microsoft-windows-search-component)