# CVE-2026-69626: Microsoft Office buffer over-read information disclosure

Source: https://junglewise.ai/threats/cve-2026-69626-microsoft-office-buffer-over-read-information-disclosure  
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-2026-69626 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Microsoft Office contains a buffer over-read vulnerability that allows an attacker to disclose sensitive information over a network without requiring authorization. This could expose confidential data contained in memory, potentially compromising user privacy and sensitive business information processed through Office applications.

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

## Quick answers

**Is CVE-2026-69626 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-69626 being exploited in the wild.

**How severe is CVE-2026-69626?** Medium severity, with a CVSS score of 6.5, published 8 September 2026.

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

**Is there a fix for CVE-2026-69626?** 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-2026-69626 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-69626?** Check whether you run Microsoft Office. 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 buffer over-read vulnerability exists in Microsoft Office where a specially crafted input can cause the application to read beyond allocated memory boundaries. The vulnerability is triggered over the network and allows information disclosure; an attacker can craft a malicious document or network request to trigger the out-of-bounds read and leak data from adjacent memory regions. No authentication is required to exploit this issue. The vulnerability has been assigned CVE-2026-69626 with a CVSS score of 6.5.

## Affected products

- Microsoft Office

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69626](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69626)

## Related threats

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- [Microsoft Office UI security feature bypass](https://junglewise.ai/threats/cve-2026-119998-product-ui-does-not-warn-user-of-unsafe-actions-in-microsoft)
- [Microsoft Office heap-based buffer overflow](https://junglewise.ai/threats/cve-2026-116717-heap-based-buffer-overflow-in-microsoft-office-allows-an)