CVE-2026-45643 - Vulnerability Details - OpenCVE

Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

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	365 Apps Office 2021 Office 2024 Office 365 Office Macos 2021 Office Macos 2024

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References

Link	Providers
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45643

History

Tue, 09 Jun 2026 17:15:00 +0000

Type	Values Removed	Values Added
Description		Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Title		Microsoft Word 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-822
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:::* 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		https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45643
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'}`

MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-06-09T17:04:52.894Z

Updated: 2026-06-09T17:48:32.879Z

Reserved: 2026-05-12T20:33:35.156Z

Link: CVE-2026-45643

Vulnrichment

No data.

NVD

Status : Awaiting Analysis

Published: 2026-06-09T17:17:31.410

Modified: 2026-06-09T19:32:51.440

Link: CVE-2026-45643

Redhat

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OpenCVE Enrichment

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