CVE-2026-108426 - Vulnerability Details - OpenCVE

Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.

No CVSS v4.0

Attack Vector Network

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.

Exploitation none

Automatable no

Technical Impact total

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-2026-108426

History

Fri, 16 Oct 2026 02:30:00 +0000

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

Thu, 15 Oct 2026 21:00:00 +0000

Type	Values Removed	Values Added
Description		Heap-based buffer overflow in Microsoft Office Word allows an unauthorized attacker to execute code over a network.
Title		Microsoft Office Word Remote Code Execution Vulnerability
First Time appeared		Microsoft Microsoft 365 Apps Microsoft office 2021 Microsoft office 2024
Weaknesses		CWE-122
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-2026-108426
Metrics		cvssV3_1 `{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/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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MITRE

Status: PUBLISHED

Assigner: microsoft

Published: 2026-10-15T20:57:16.920Z

Updated: 2026-10-16T01:13:50.541Z

Reserved: 2026-10-09T21:52:56.477Z

Link: CVE-2026-108426

Vulnrichment

Updated: 2026-10-16T01:04:29.343Z

NVD

Status : Received

Published: 2026-10-15T21:17:07.820

Modified: 2026-10-15T21:17:07.820

Link: CVE-2026-108426

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-122

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