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CVE-2026-105714: Microsoft Access lets remote attacker run code

CVE-2026-105714 · published 22 days ago

Summary

Microsoft Access in Microsoft 365 Apps for Enterprise and Office LTSC 2021/2024 can be tricked into copying too much data into memory, which may let an outside attacker run their own programs over the network. This could lead to unauthorized access or control of your computers. Apply the latest security updates from Microsoft as soon as possible.

What to do

Update microsoft microsoft office ltsc 2021 to version 16.0.14334.20974 or later.
Update microsoft microsoft office ltsc 2024 to version 16.0.17932.21056 or later.

Affected software

Vendor	Product	Affected versions
microsoft	microsoft 365 apps for enterprise	16.0.1
microsoft	microsoft office ltsc 2021	< 16.0.14334.20974
microsoft	microsoft office ltsc 2024	< 16.0.17932.21056
microsoft	365_apps	All versions `cpe:2.3:a:microsoft:365_apps:-::::enterprise::x64:*`
microsoft	office_2021	All versions `cpe:2.3:a:microsoft:office_2021:-::::ltsc:-:x64:`
microsoft	office_2024	All versions `cpe:2.3:a:microsoft:office_2024:-::::ltsc:-:x64:`

Original advisory text

Microsoft Office Access Remote Code Execution Vulnerability

Heap-based buffer overflow in Microsoft Office Access allows an unauthorized attacker to execute code over a network.

References

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

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker full control

Severity

7.5 High

Exploitation

<1% chance of attack within 30 days

Type

CWE-122Heap-based Buffer Overflow

Timeline

Published13 Oct 2026

Updated4 Nov 2026

First seen13 Oct 2026

Sources

CVE-2026-105714 · NVD

CVE-2026-105714 · MITRE

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