CVE-2026-112731: Microsoft Office buffer over-read information disclosure

CVE-2026-112731 · Severity: medium · CVSS 6.5 · Published 2026-11-10

Microsoft Office contains a buffer over-read vulnerability that allows an attacker to read sensitive information from memory and transmit it across a network. An attacker can exploit this flaw remotely without authentication to extract confidential data from users' Office documents or the application itself.

Technologies: Microsoft Office. Vendors: Microsoft.

Quick answers

Is CVE-2026-112731 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-112731 being exploited in the wild.
How severe is CVE-2026-112731?
Medium severity, with a CVSS score of 6.5, published 10 November 2026.
Which products and versions are affected?
Microsoft Office.
Is there a fix for CVE-2026-112731?
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-2026-112731 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-112731?
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 flaw in Microsoft Office allows reading beyond allocated memory boundaries, potentially exposing sensitive information in process memory. The vulnerability is reachable over the network without prior authentication. Exploitation results in information disclosure but does not enable code execution or modification of data.

Affected products

  • Microsoft Office

Timeline

  • 2026-11-10: disclosed

References

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