CVE-2026-88153 - Vulnerability Details - OpenCVE

Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Vendors	Products
Microsoft Subscribe	365 Apps Subscribe Office 2021 Subscribe Office 2024 Subscribe

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88153

History

Tue, 13 Oct 2026 19:15:00 +0000

Type	Values Removed	Values Added
Description		Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.
Title		Microsoft Office Excel Information Disclosure Vulnerability
First Time appeared		Microsoft Microsoft 365 Apps Microsoft office 2021 Microsoft office 2024
Weaknesses		CWE-125
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_2024:::::long_term_servicing_channel:::*
Vendors & Products		Microsoft Microsoft 365 Apps Microsoft office 2021 Microsoft office 2024
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88153
Metrics		cvssV3_1 `{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-13T19:00:29.609Z

Updated: 2026-10-13T21:34:53.766Z

Reserved: 2026-09-09T21:58:19.186Z

Link: CVE-2026-88153

Vulnrichment

No data.

NVD

Status : Undergoing Analysis

Published: 2026-10-13T19:21:35.330

Modified: 2026-10-13T21:19:50.967

Link: CVE-2026-88153

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-125

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