CVE-2025-21395

HIGH

Microsoft 365 Apps - Heap Buffer Overflow

Title source: rule
STIX 2.1

Description

Microsoft Access Remote Code Execution Vulnerability

References (1)

Core 1
Core References
Patch, Vendor Advisory vendor-advisory patch
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21395

Scores

CVSS v3 7.8
EPSS 0.0206
EPSS Percentile 84.0%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-122
Status published
Products (5)
microsoft/365_apps (2 CPE variants)
microsoft/access 2016
microsoft/office 2019 (2 CPE variants)
microsoft/office_long_term_servicing_channel 2021 (2 CPE variants)
microsoft/office_long_term_servicing_channel 2024 (2 CPE variants)
Published Jan 14, 2025
Tracked Since Feb 18, 2026