Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

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Vendors Products
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Microsoft Office Ltsc 2021 Subscribe
Microsoft Office Ltsc 2024 Subscribe
Microsoft Office Ltsc For Mac 2021 Subscribe
Microsoft Office Ltsc For Mac 2024 Subscribe
Office 2021 Subscribe
Office 2024 Subscribe
Office 365 Subscribe
Office Macos 2021 Subscribe
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Office Online Server Subscribe
Advisories

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Fixes

Solution

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Workaround

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History

Thu, 12 Nov 2026 10:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft microsoft Office Ltsc 2021
Microsoft microsoft Office Ltsc 2024
Microsoft microsoft Office Ltsc For Mac 2021
Microsoft microsoft Office Ltsc For Mac 2024
Microsoft office Online Server
Vendors & Products Microsoft microsoft Office Ltsc 2021
Microsoft microsoft Office Ltsc 2024
Microsoft microsoft Office Ltsc For Mac 2021
Microsoft microsoft Office Ltsc For Mac 2024
Microsoft office Online Server

Thu, 12 Nov 2026 01:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 10 Nov 2026 18:30:00 +0000

Type Values Removed Values Added
Description Heap-based buffer overflow in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Title Microsoft Office Excel Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft office 2021
Microsoft office 2024
Microsoft office 365
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_2021:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_2021:*:*:*:*:ltsc:*:*:*
cpe:2.3:a:microsoft:office_2024:*:*:*:*:long_term_servicing_channel:*:*:*
cpe:2.3:a:microsoft:office_365:*:*:*:*:*:macos:*:*
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 2021
Microsoft office 2024
Microsoft office 365
Microsoft office Macos 2021
Microsoft office Macos 2024
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-11-11T17:20:30.248Z

Reserved: 2026-10-28T19:02:36.604Z

Link: CVE-2026-118707

cve-icon Vulnrichment

Updated: 2026-11-10T19:35:16.242Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-10T19:19:45.890

Modified: 2026-11-10T20:18:21.340

Link: CVE-2026-118707

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-12T11:15:01Z

Weaknesses