# CVE-2026-80076: Microsoft Office out-of-bounds read in memory parsing

Source: https://junglewise.ai/threats/cve-2026-80076-microsoft-office-out-of-bounds-read-in-memory-parsing  
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-2026-80076 · Severity: medium · CVSS 6.5 · Published 2026-09-08

Microsoft Office is a widely-used productivity suite for creating and editing documents, spreadsheets, and presentations. This vulnerability allows a remote attacker to read sensitive information from affected systems by exploiting a memory parsing flaw, potentially exposing confidential data such as document content or user credentials.

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

## Quick answers

**Is CVE-2026-80076 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-80076 being exploited in the wild.

**How severe is CVE-2026-80076?** 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-2026-80076?** 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-2026-80076 attacked?** It is attacked over the network.

**Am I affected by CVE-2026-80076?** 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

An out-of-bounds read vulnerability exists in Microsoft Office's document parsing logic, allowing an attacker to access memory beyond allocated buffer boundaries. The vulnerability can be exploited over the network by sending a malicious Office document without requiring authentication or user interaction. Successful exploitation results in information disclosure, enabling attackers to exfiltrate sensitive data from affected systems. Microsoft has released security updates to address this issue.

## Affected products

- Microsoft Office

## Timeline

- 2026-09-08: disclosed

## References

- [https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80076](https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80076)

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