CVE-2025-21354

HIGH

Microsoft 365 Apps and Office - Remote Code Execution via Untrusted Pointer Dereference

Title source: llm
STIX 2.1

Description

Microsoft Excel Remote Code Execution Vulnerability

References (1)

Core 1
Core References
Patch, Vendor Advisory vendor-advisory patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21354

Scores

CVSS v3 8.4
EPSS 0.0094
EPSS Percentile 56.2%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-822
Status published
Products (12)
microsoft/365_apps (2 CPE variants)
Microsoft/Microsoft 365 Apps for Enterprise 16.0.1 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office 2019 19.0.0 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office LTSC 2021 16.0.1 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office LTSC 2024 16.0.0 - https://aka.ms/OfficeSecurityReleases
Microsoft/Microsoft Office LTSC for Mac 2021 16.0.1 - 16.93.25011212
Microsoft/Microsoft Office LTSC for Mac 2024 16.0.0 - 16.93.25011212
microsoft/office 2019 (2 CPE variants)
Microsoft/Office Online Server 16.0.0.0 - 16.0.10416.20047
microsoft/office_long_term_servicing_channel 2021 (3 CPE variants)
... and 2 more
Published Jan 14, 2025
Tracked Since Feb 18, 2026