# CVE-2026-72977: Microsoft PowerPoint out-of-bounds read allows information disclosure

Source: https://junglewise.ai/threats/cve-2026-72977-microsoft-powerpoint-out-of-bounds-read-allows-information  
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-2026-72977 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Microsoft PowerPoint, a widely-used presentation software included in Microsoft Office, contains an out-of-bounds read vulnerability that could allow an attacker to access and disclose sensitive information over a network. This vulnerability affects the application's ability to safely process presentation files, potentially exposing confidential data contained in presentations or system memory. An attacker could exploit this by sending a specially crafted PowerPoint file to a user or leveraging network access to trigger the vulnerability.

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

## Quick answers

**Is CVE-2026-72977 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-72977 being exploited in the wild.

**How severe is CVE-2026-72977?** Medium severity, with a CVSS score of 6.5, published 8 September 2026.

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

**Is there a fix for CVE-2026-72977?** 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-2026-72977 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-72977?** Check whether you run Microsoft 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

This vulnerability is an out-of-bounds read flaw in Microsoft PowerPoint's file processing logic. The root cause appears to be improper bounds checking when parsing presentation file structures, allowing an attacker to read memory beyond the intended buffer boundaries. The attack vector is network-based, typically requiring a user to open a malicious PowerPoint file or allowing remote exploitation in certain configurations. An attacker can achieve unauthorized information disclosure by extracting sensitive data from memory or presentation content. Patches are available from Microsoft's security update guide.

## Affected products

- Microsoft PowerPoint

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72977](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-72977)

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