Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Advisories

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Fixes

Solution

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Workaround

No workaround given by the vendor.

History

Wed, 15 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft office Online Server
Vendors & Products Microsoft office Online Server

Wed, 15 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 14 Jul 2026 17:45:00 +0000

Type Values Removed Values Added
Description Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Title Microsoft Excel Remote Code Execution Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft excel 2016
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft office 365
Microsoft office Macos 2021
Microsoft office Macos 2024
Weaknesses CWE-125
CPEs cpe:2.3:a:microsoft:365_apps:*:*:*:*:enterprise:*:*:*
cpe:2.3:a:microsoft:excel_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_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 excel 2016
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
Microsoft office 365
Microsoft office Macos 2021
Microsoft office Macos 2024
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-08-10T17:19:53.204Z

Reserved: 2026-06-16T14:13:49.836Z

Link: CVE-2026-55044

cve-icon Vulnrichment

Updated: 2026-07-15T11:12:51.721Z

cve-icon NVD

Status : Analyzed

Published: 2026-07-14T18:18:16.043

Modified: 2026-07-16T11:54:34.857

Link: CVE-2026-55044

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-03T03:30:13Z

Weaknesses