Vulnerability in Microsoft 365_apps
CVE-2026-45460
Buffer over-read in Microsoft Office allows an unauthorized attacker to disclose information locally.
EPSS: 0.004 (28.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Microsoft 365_apps
- Microsoft 365_copilot
- Microsoft Microsoft_365
- Microsoft 365 Apps For Enterprise — versions 16.0.1
- Microsoft Office 2019 — versions 19.0.0
- Microsoft Office 365 For Mac — versions 1.0.0
- Microsoft Office For Android — versions 16.0.1
- Microsoft Office Ltsc 2021 — versions 16.0.1
- Microsoft Office Ltsc 2024 — versions 16.0.0
- Microsoft Office Ltsc For Mac 2021 — versions 16.0.1
Weakness classification (CWE)
References
- secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-45460?
- CVE-2026-45460 is a medium-severity vulnerability in Microsoft 365_apps, classified under Buffer Over-read. CVSS score: 4.7/10. Published 2026-06-09.
- How severe is CVE-2026-45460?
- Medium severity. CVSS v3 base score is 4.7 out of 10.