# CVE-2026-109487: Microsoft Office PowerPoint use-after-free code execution

Source: https://junglewise.ai/threats/cve-2026-109487-use-after-free-in-microsoft-office-powerpoint-allows-an  
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-2026-109487 · Severity: high · CVSS 7.5 · Published 2026-11-10

Microsoft Office PowerPoint contains a use-after-free vulnerability that allows an attacker to execute arbitrary code on a user's computer over the network. An attacker could exploit this by sending a specially crafted PowerPoint file that, when opened, triggers the vulnerability and grants them control of the affected system. This could lead to data theft, malware installation, or system compromise.

Technologies: [Microsoft Office PowerPoint](https://junglewise.ai/threats/technologies/office-powerpoint). Vendors: [Microsoft](https://junglewise.ai/threats/vendors/microsoft).

## Quick answers

**Is CVE-2026-109487 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-109487 being exploited in the wild.

**How severe is CVE-2026-109487?** High severity, with a CVSS score of 7.5, published 10 November 2026.

**Which products and versions are affected?** Microsoft Office PowerPoint.

**Is there a fix for CVE-2026-109487?** 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-2026-109487 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-109487?** Check whether you run Microsoft Office PowerPoint. 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 in PowerPoint's memory management allows an attacker to execute arbitrary code by providing a specially crafted file. The vulnerability can be exploited over the network when a user opens a malicious PowerPoint document. No authentication or user interaction beyond opening the file is required for exploitation.

## Affected products

- Microsoft Office PowerPoint

## Timeline

- 2026-11-10: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109487](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109487)

## Related threats

- [Microsoft Office PowerPoint heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-120005-heap-based-buffer-overflow-in-microsoft-office-powerpoint-allows)
- [Microsoft Office PowerPoint heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-120001-heap-based-buffer-overflow-in-microsoft-office-powerpoint-allows)
- [Microsoft Office PowerPoint type confusion information disclosure](https://junglewise.ai/threats/cve-2026-116922-access-of-resource-using-incompatible-type-type-confusion-in)
- [Microsoft Office PowerPoint out-of-bounds read](https://junglewise.ai/threats/cve-2026-112738-out-of-bounds-read-in-microsoft-office-powerpoint-allows-an)
- [Microsoft Office PowerPoint use-after-free code execution](https://junglewise.ai/threats/cve-2026-112734-use-after-free-in-microsoft-office-powerpoint-allows-an)