CVE-2026-112716: Microsoft Word heap-based buffer overflow

CVE-2026-112716 · Severity: high · CVSS 8.8 · Published 2026-11-10

Microsoft Word, a widely-used document editing application, contains a heap-based buffer overflow vulnerability that could allow an attacker to execute arbitrary code on a user's computer when they open a specially-crafted Word document. This could lead to complete compromise of the affected system, including data theft, malware installation, or lateral movement to corporate networks.

Technologies: Microsoft Word. Vendors: Microsoft.

Quick answers

Is CVE-2026-112716 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112716 being exploited in the wild.
How severe is CVE-2026-112716?
High severity, with a CVSS score of 8.8, published 10 November 2026.
Which products and versions are affected?
Microsoft Word.
Is there a fix for CVE-2026-112716?
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-2026-112716 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-112716?
Check whether you run Microsoft Word. 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 heap-based buffer overflow in Microsoft Word allows remote code execution when a malicious document is processed. The vulnerability requires user interaction (opening a document) and network access to deliver the exploit payload. Successful exploitation grants the attacker the same privileges as the user running Word.

Affected products

  • Microsoft Word

Timeline

  • 2026-11-10: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.