CVE-2026-35440 - Vulnerability Details - OpenCVE

Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose information locally.

No CVSS v4.0

Attack Vector Local

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.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Microsoft	365 Apps Office 2019 Office 2021 Office 2024 Word 2016

No data.

No data.

References

Link	Providers
https://www.spirityenterprise.com/managed-detection-response-microsoft
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35440

History

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

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

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

Type	Values Removed	Values Added
Description		Files or directories accessible to external parties in Microsoft Office Word allows an unauthorized attacker to disclose information locally.
Title		Microsoft Word Information Disclosure Vulnerability
First Time appeared		Microsoft Microsoft 365 Apps Microsoft office 2019 Microsoft office 2021 Microsoft office 2024 Microsoft word 2016
Weaknesses		CWE-552
CPEs		cpe:2.3:a:microsoft:365_apps:::::enterprise:::* 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:word_2016::::::::
Vendors & Products		Microsoft Microsoft 365 Apps Microsoft office 2019 Microsoft office 2021 Microsoft office 2024 Microsoft word 2016
References		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-35440
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'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-05-12T16:58:36.387Z

Updated: 2026-05-13T17:58:31.130Z

Reserved: 2026-04-02T19:21:11.805Z

Link: CVE-2026-35440

Vulnrichment

Updated: 2026-05-13T10:20:25.898Z

NVD

Status : Awaiting Analysis

Published: 2026-05-12T18:17:14.287

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

Link: CVE-2026-35440

Redhat

No data.

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