What is CVE-2026-69626?

CVE-2026-69626 is a medium-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Buffer Over-read. CVSS score: 6.5/10. Published 2026-09-08.

How severe is CVE-2026-69626?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Microsoft 365 Apps For Enterprise

CVE-2026-69626

Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information over a network.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

Affected products

Microsoft 365 Apps For Enterprise
Microsoft Office 2016
Microsoft Office 2019
Microsoft Office 365 For Mac
Microsoft Office Ltsc 2021
Microsoft Office Ltsc 2024
Microsoft Office Ltsc For Mac 2021
Microsoft Office Ltsc For Mac 2024

Weakness classification (CWE)

CWE-126 — Buffer Over-read

References

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

Frequently asked questions

What is CVE-2026-69626?: CVE-2026-69626 is a medium-severity vulnerability in Microsoft 365 Apps For Enterprise, classified under Buffer Over-read. CVSS score: 6.5/10. Published 2026-09-08.
How severe is CVE-2026-69626?: Medium severity. CVSS v3 base score is 6.5 out of 10.