What is CVE-2025-47174?

CVE-2025-47174 is a high-severity vulnerability in Microsoft 365_apps, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-06-10.

How severe is CVE-2025-47174?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Microsoft 365_apps

CVE-2025-47174

Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

Vulnerability class: Buffer Overflow

EPSS: 0.005 (36.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Microsoft 365_apps
Microsoft 365 Apps For Enterprise — versions 16.0.1
Microsoft Office Ltsc 2021 — versions 16.0.1
Microsoft Office Ltsc 2024 — versions 16.0.0
Microsoft Office_long_term_servicing_channel — versions 2021, 2024

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

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

Frequently asked questions

What is CVE-2025-47174?: CVE-2025-47174 is a high-severity vulnerability in Microsoft 365_apps, classified under Heap-based Buffer Overflow. CVSS score: 7.8/10. Published 2025-06-10.
How severe is CVE-2025-47174?: High severity. CVSS v3 base score is 7.8 out of 10.