CVE-2026-45458

35th percentile - higher than 35% of all known CVEs

A Use-After-Free vulnerability in Microsoft Office allows an unauthorized attacker to execute code locally. The issue stems from improper memory management when processing specially crafted files.

An attacker could take control of the victim's system, installing malware, modifying data, or disrupting operations. The risk is particularly high in corporate environments where Office is widely used.

Immediately apply the security update released by Microsoft for affected Office versions. Restrict opening files from unknown sources and enforce least-privilege policies.