CVE-2026-102867: Microsoft Office Word out-of-bounds read

CVE-2026-102867 · Severity: medium · CVSS 6.5 · Published 2026-10-13

Microsoft Office Word contains an out-of-bounds read vulnerability that allows an attacker to disclose sensitive information when processing a specially crafted document. An attacker can exploit this remotely to gain access to confidential data without requiring user interaction beyond opening the affected file.

Technologies: Microsoft 365 Apps, Microsoft Office 2021, Microsoft Office 2024, Microsoft Office Word. Vendors: Microsoft.

Quick answers

Is CVE-2026-102867 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-102867 being exploited in the wild.
How severe is CVE-2026-102867?
Medium severity, with a CVSS score of 6.5, published 13 October 2026.
Which products and versions are affected?
Microsoft Office Word.
Is there a fix for CVE-2026-102867?
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-2026-102867 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-102867?
Check whether you run Microsoft 365 Apps, Microsoft Office 2021, Microsoft Office 2024 or one of the others listed. 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 Word's document parsing logic, allowing memory disclosure. An attacker can craft a malicious Office document that, when opened by a user, reads beyond allocated buffer boundaries to leak sensitive information. The vulnerability requires user interaction (opening a document) but operates over the network via email or file sharing.

Affected products

  • Microsoft Office Word

Timeline

  • 2026-10-13: disclosed

References

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