SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2026-45474

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

HIGH 8.4EPSS 0.36%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.36%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

Use after free in Microsoft Office allows an unauthorized attacker to execute code locally.

CVSS 3.1
8.4 HIGHCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
0.36% probability · 30th percentile
CISA KEV
Not listed
Weakness
CWE-416, CWE-787
Affected
microsoft/365 apps · microsoft/365 copilot · microsoft/microsoft 365 · microsoft/office 2016 · microsoft/office 2019 · microsoft/office 2021 · microsoft/office 2024
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.