Is CVE-2026-105714 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-105714 being exploited in the wild.

How severe is CVE-2026-105714?

High severity, with a CVSS score of 7.5, published 13 October 2026.

Is there a fix for CVE-2026-105714?

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-2026-105714 attacked?

It is attacked over the network, in a web application.

Am I affected by CVE-2026-105714?

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.

CVE-2026-105714: Microsoft Office Access heap-based buffer overflow

CVE-2026-105714 · Severity: high · CVSS 7.5 · Published 2026-10-13

Microsoft Office Access contains a heap-based buffer overflow vulnerability that could allow an attacker to execute arbitrary code on a user's computer over a network. An attacker could exploit this by sending a specially crafted file or network message, potentially leading to data theft, system compromise, or installation of malware without requiring user credentials.

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

Quick answers

Is CVE-2026-105714 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-105714 being exploited in the wild.
How severe is CVE-2026-105714?: High severity, with a CVSS score of 7.5, published 13 October 2026.
Which products and versions are affected?: Microsoft Office Access.
Is there a fix for CVE-2026-105714?: 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-2026-105714 attacked?: It is attacked over the network, in a web application.
Am I affected by CVE-2026-105714?: 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

A heap-based buffer overflow exists in Microsoft Office Access that can be triggered remotely without authentication. The vulnerability allows an attacker to overwrite heap memory and execute arbitrary code with the privileges of the user running Access. Network-based exploitation is possible, making this a significant remote code execution risk.

Affected products

Microsoft Office Access

Timeline

2026-10-13: disclosed

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-105714

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