# CVE-2026-80086: Microsoft Office PowerPoint out-of-bounds read

Source: https://junglewise.ai/threats/cve-2026-80086-microsoft-office-powerpoint-out-of-bounds-read  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-08. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-80086 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Microsoft PowerPoint contains a vulnerability that allows an attacker to read memory beyond intended boundaries through a specially crafted file. An attacker can exploit this flaw remotely to extract sensitive information, such as credentials or document content, without requiring user interaction or prior authentication. This could lead to unauthorized disclosure of confidential business data.

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

## Quick answers

**Is CVE-2026-80086 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-80086 being exploited in the wild.

**How severe is CVE-2026-80086?** Medium severity, with a CVSS score of 6.5, published 8 September 2026.

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

**Is there a fix for CVE-2026-80086?** 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-2026-80086 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-80086?** 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

An out-of-bounds read vulnerability exists in Microsoft PowerPoint's file parsing logic, allowing an attacker to access memory outside allocated buffers. The vulnerability is triggered when processing a maliciously crafted PowerPoint file, which can be delivered remotely over a network. No authentication or user interaction is required beyond opening the malicious file. An attacker can exploit this to read sensitive data from the application's memory, potentially exposing credentials, encryption keys, or document contents. Microsoft has issued a security update addressing this issue.

## Affected products

- Microsoft Office PowerPoint

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80086](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80086)

## 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)