# CVE-2026-118222: Windows Advanced Rasterization Platform heap buffer overflow

Source: https://junglewise.ai/threats/cve-2026-118222-heap-based-buffer-overflow-in-windows-advanced-rasterization  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-10. Updated: 2026-11-10  
License: CC BY 4.0 with a link back

CVE-2026-118222 · Severity: high · CVSS 7.8 · Published 2026-11-10

Windows Advanced Rasterization Platform, a core graphics component in Windows, contains a heap buffer overflow vulnerability that allows an authorized local user to elevate their privileges on the system. An attacker with legitimate user access could exploit this flaw to gain administrator-level control of an affected machine.

Technologies: [Microsoft Windows Advanced Rasterization Platform](https://junglewise.ai/threats/technologies/windows-advanced-rasterization-platform). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-118222 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-118222 being exploited in the wild.

**How severe is CVE-2026-118222?** High severity, with a CVSS score of 7.8, published 10 November 2026.

**Which products and versions are affected?** Microsoft Windows Advanced Rasterization Platform.

**Is there a fix for CVE-2026-118222?** 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-2026-118222 attacked?** It is attacked with local access, in an operating system.

**Am I affected by CVE-2026-118222?** Check whether you run Microsoft Windows Advanced Rasterization Platform. 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 heap-based buffer overflow exists in the Windows Advanced Rasterization Platform graphics subsystem. The vulnerability requires local access and prior authorization (authenticated user), and allows privilege escalation from a standard user account to system-level privileges through memory corruption.

## Affected products

- Microsoft Windows Advanced Rasterization Platform

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118222](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-118222)

## Related threats

- [Windows Advanced Rasterization Platform type confusion privilege escalation](https://junglewise.ai/threats/cve-2026-95960-access-of-resource-using-incompatible-type-type-confusion-in)
- [Windows Advanced Rasterization Platform heap overflow privilege escalation](https://junglewise.ai/threats/cve-2026-94515-heap-based-buffer-overflow-in-windows-advanced-rasterization)
- [Windows Advanced Rasterization Platform stack buffer overflow](https://junglewise.ai/threats/cve-2026-118283-stack-based-buffer-overflow-in-windows-advanced-rasterization)
- [Windows Advanced Rasterization Platform heap buffer overflow](https://junglewise.ai/threats/cve-2026-118280-heap-based-buffer-overflow-in-windows-advanced-rasterization)
- [Windows Advanced Rasterization Platform heap buffer overflow](https://junglewise.ai/threats/cve-2026-118279-heap-based-buffer-overflow-in-windows-advanced-rasterization)