Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Published: 2026-02-10
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Local Information Disclosure
Action: Apply patch
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Wed, 11 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Microsoft excel
Microsoft office
Microsoft office Long Term Servicing Channel
Microsoft office Online Server
CPEs cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x86:*
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:*:x64:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:*:x86:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x86:*
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:macos:*:*
cpe:2.3:a:microsoft:office_online_server:*:*:*:*:*:*:*:*
Vendors & Products Microsoft excel
Microsoft office
Microsoft office Long Term Servicing Channel
Microsoft office Online Server

Wed, 11 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Tue, 10 Feb 2026 18:15:00 +0000

Type Values Removed Values Added
Description Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Title Microsoft Excel Information Disclosure Vulnerability
First Time appeared Microsoft
Microsoft 365 Apps
Microsoft excel 2016
Microsoft office 2019
Microsoft office 2021
Microsoft office 2024
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_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 Macos 2021
Microsoft office Macos 2024
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}


Subscriptions

Microsoft 365 Apps Excel Excel 2016 Office Office 2019 Office 2021 Office 2024 Office Long Term Servicing Channel Office Macos 2021 Office Macos 2024 Office Online Server
cve-icon MITRE

Status: PUBLISHED

Assigner: microsoft

Published:

Updated: 2026-05-11T21:25:38.274Z

Reserved: 2025-12-11T21:02:05.737Z

Link: CVE-2026-21261

cve-icon Vulnrichment

Updated: 2026-02-11T16:08:48.683Z

cve-icon NVD

Status : Analyzed

Published: 2026-02-10T18:16:28.107

Modified: 2026-02-11T19:08:10.653

Link: CVE-2026-21261

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-15T17:45:10Z

Weaknesses