CVE-2026-45461

CVE-2026-45461

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

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Weakness classification (CWE)

CWE-416 — Use After Free

References

secure@microsoft.com

Frequently asked questions

What is CVE-2026-45461?: CVE-2026-45461 is a high-severity vulnerability, classified under Use After Free. CVSS score: 8.4/10. Published 2026-06-09.
How severe is CVE-2026-45461?: High severity. CVSS v3 base score is 8.4 out of 10.