Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
History

Wed, 13 May 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 13 May 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft office For Android
Vendors & Products Microsoft office For Android

Tue, 12 May 2026 17:30:00 +0000

Type Values Removed Values Added
Description Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Title Microsoft Office Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft office
Microsoft office 2016
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft office Macos 2021
Microsoft office Macos 2024
Weaknesses CWE-122
CPEs cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:office:*:*:android:*:*:*:*:*
cpe:2.3:a:microsoft:office_2016:*:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office_2019:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_2021:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_macos_2021:*:*:*:*:*:long_term_servicing_channel:*:*
cpe:2.3:a:microsoft:office_macos_2024:*:*:*:*:*:long_term_servicing_channel:*:*
Vendors & Products Microsoft
Microsoft 365 Apps
Microsoft office
Microsoft office 2016
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft office Macos 2021
Microsoft office Macos 2024
References
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-05-13T17:58:32.216Z

Reserved: 2026-04-11T23:06:15.614Z

Link: CVE-2026-40363

cve-icon Vulnrichment

Updated: 2026-05-13T10:01:33.142Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-05-12T18:17:15.217

Modified: 2026-05-13T15:34:52.573

Link: CVE-2026-40363

cve-icon Redhat

No data.