CVE-2025-53739

HIGH

Microsoft Office Excel - Code Injection

Title source: llm

Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

CVSS v3 7.8

EPSS 0.0018

EPSS Percentile 38.8%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-843

Status published

Products (6)

microsoft/365_apps (2 CPE variants)

microsoft/excel 2016 (2 CPE variants)

microsoft/office 2019 (2 CPE variants)

microsoft/office_long_term_servicing_channel 2021 (3 CPE variants)

microsoft/office_long_term_servicing_channel 2024 (3 CPE variants)

microsoft/office_online_server

Published Aug 12, 2025

Tracked Since Feb 18, 2026