What is CVE-2026-69614?

CVE-2026-69614 is a high-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-09-08.

How severe is CVE-2026-69614?

High severity. CVSS v3 base score is 8.8 out of 10.

Buffer overflow in Microsoft 365 Apps For Enterprise

CVE-2026-69614

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

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft 365 Apps For Enterprise
Microsoft Access 2016
Microsoft Access 2016 (32-bit Edition)
Microsoft Office 2019
Microsoft Office Ltsc 2021
Microsoft Office Ltsc 2024

Weakness classification (CWE)

CWE-20 — Improper Input Validation
CWE-121 — Stack-based Buffer Overflow

References

secure@microsoft.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-69614?: CVE-2026-69614 is a high-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-09-08.
How severe is CVE-2026-69614?: High severity. CVSS v3 base score is 8.8 out of 10.