CVE-2026-124233: Microsoft Office Word buffer over-read information disclosure

CVE-2026-124233 · Severity: medium · CVSS 6.5 · Published 2026-11-10

Microsoft Office Word contains a buffer over-read vulnerability that allows an attacker to access sensitive information from the application's memory. An attacker can exploit this by sending a specially crafted document over the network, potentially exposing confidential data without requiring user credentials or interaction beyond opening the file.

Technologies: Microsoft Office Word. Vendors: Microsoft.

Quick answers

Is CVE-2026-124233 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-124233 being exploited in the wild.
How severe is CVE-2026-124233?
Medium severity, with a CVSS score of 6.5, published 10 November 2026.
Which products and versions are affected?
Microsoft Office Word.
Is there a fix for CVE-2026-124233?
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-2026-124233 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-124233?
Check whether you run Microsoft Office 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 buffer over-read flaw in Microsoft Office Word permits an out-of-bounds memory read that can leak sensitive data. The vulnerability is triggered by network-delivered malicious Word documents and requires no authentication or special user interaction beyond opening the file. A successful exploit results in information disclosure from the affected process memory.

Affected products

  • Microsoft Office Word

Timeline

  • 2026-11-10: disclosed

References

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