CVE-2026-40367
published 2026-05-12CVE-2026-40367: Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.
PriorityP349high8.4CVSS 3.1
AVLACLPRNUINSUCHIHAH
EPSS
0.46%
37.0th percentile
Access of resource using incompatible type ('type confusion') in Microsoft Office Word allows an unauthorized attacker to execute code locally.
Affected
17 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | microsoft_365_apps_for_enterprise | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_2019 | >= 19.0.0 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_2021 | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_2024 | >= 16.0.0 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_office_ltsc_for_mac_2021 | >= 16.0.1 < 16.109.26051019 | 16.109.26051019 |
| microsoft | microsoft_office_ltsc_for_mac_2024 | >= 16.0.0 < 16.109.26051019 | 16.109.26051019 |
| microsoft | microsoft_sharepoint_enterprise_server_2016 | >= 16.0.0 < 16.0.5552.1002 | 16.0.5552.1002 |
| microsoft | microsoft_sharepoint_server_2019 | >= 16.0.0 < 16.0.10417.20128 | 16.0.10417.20128 |
| microsoft | microsoft_sharepoint_server_subscription_edition | >= 16.0.0 < 16.0.19725.20280 | 16.0.19725.20280 |
| microsoft | microsoft_word_2016 | >= 16.0.1 < 16.0.5552.1000 | 16.0.5552.1000 |
| microsoft | office | — | — |
| microsoft | office_long_term_servicing_channel | — | — |
| microsoft | office_long_term_servicing_channel | — | — |
| microsoft | sharepoint_server | < 16.0.19725.20280 | 16.0.19725.20280 |
| microsoft | sharepoint_server | — | — |
| microsoft | sharepoint_server | — | — |
| microsoft | word | — | — |
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VulDB
Microsoft Word up to Word 2016 untrusted pointer dereference
vuldb·2026-05-12
CVE-2026-40367 [CRITICAL] Microsoft Word up to Word 2016 untrusted pointer dereference
A vulnerability was found in Microsoft Word. It has been declared as critical. This issue affects some unknown processing. The manipulation results in untrusted pointer dereference.
This vulnerability is known as CVE-2026-40367. It is possible to launch the attack remotely. No exploit is available.
It is recommended to upgrade the affected component.
GHSA
GHSA-hv6m-qg7h-hqf7: Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally
ghsa_unreviewed·2026-05-12
CVE-2026-40367 [HIGH] CWE-822 GHSA-hv6m-qg7h-hqf7: Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
No detection rules found.
No public exploits indexed.
Qualys
Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review
blogs_qualys·2026-05-12
CVE-2026-40364 Microsoft and Adobe Patch Tuesday, May 2026 Security Update Review
## Table of Contents
Microsoft Patch Tuesday forMay2026
Adobe Patches for May 2026
Critical Severity Vulnerabilities Patched inMayPatch Tuesday Edition
Other Microsoft Vulnerability Highlights
Microsoft Release Summary
Qualys Monthly Webinar Series
May 2026’s Patch Tuesday arrives with Microsoft addressing a fresh set of vulnerabilities across its ecosystem, reinforcing the ongoing need for timely patching in an increasingly threat-heavy landscape. Here’s a quick breakdown of what you need to know.
## Microsoft Patch Tuesday for May 2026
This month’s release addresses 137 vulnerabilities, including 30 critical and 103 important-severity vulnerabilities.
In this month’s updates, Microsoft has not addressed any publicly disclosed zero-day vulnerability.
Microsoft has addressed 128
Talos
Microsoft Patch Tuesday for May 2026 — Snort rules and prominent vulnerabilities
blogs_talos·2026-05-12·CVSS 7.5
CVE-2026-32161 [HIGH] Microsoft Patch Tuesday for May 2026 — Snort rules and prominent vulnerabilities
## Microsoft Patch Tuesday for May 2026 — Snort rules and prominent vulnerabilities
By Jaeson Schultz
Microsoft has released its monthly security update for May 2026, which includes 137 vulnerabilities affecting a range of products, including 31 that Microsoft marked as “critical”.
In this month's release, Microsoft has not observed any of the included vulnerabilities being actively exploited in the wild. Out of 31 "critical" entries, 16 are remote code execution (RCE) vulnerabilities in Microsoft Windows services and applications including Microsoft Office, Microsoft Word, Windows Native WiFi Miniport Driver, Azure, Office for Android, Microsoft Dynamics 365, Windows GDI, Microsoft SharePoint, Windows Graphics Component, Windows Netlogon, and Windows DNS Client.
CVE-2026-32161 is a cr
Tenable
Microsoft’s May 2026 Patch Tuesday Addresses 118 CVEs (CVE-2026-41103)
blogs_tenable·2026-05-12·CVSS 9.1
CVE-2026-41103 [CRITICAL] Microsoft’s May 2026 Patch Tuesday Addresses 118 CVEs (CVE-2026-41103)
## Exposure Management
## Explore By Use Case
## Explore By Industry
## Tenable is the one clear leader in Exposure Management
## Exposure management
resource center
## Accelerate your exposure management strategy with practical resources and tools.
## Explore By Use Case
## Explore By Industry
## Tenable is the one clear leader in Exposure Management
## Exposure management
resource center
## Accelerate your exposure management strategy with practical resources and tools.
## Microsoft’s May 2026 Patch Tuesday Addresses 118 CVEs (CVE-2026-41103)
16 Critical
102 Important
0 Moderate
0 Low
Microsoft addresses 118 CVEs in its May 2026 Patch Tuesday release, with no zero-days exploited in the wild or publicly disclosed for the first time since June 2024.
Microsoft p
Sans Isc
Microsoft May 2026 Patch Tuesday, (Tue, May 12th)
blogs_sans_isc·2026-05-12·CVSS 4.3
CVE-2026-41103 [MEDIUM] Microsoft May 2026 Patch Tuesday, (Tue, May 12th)
Microsoft May 2026 Patch Tuesday
Published: 2026-05-12. Last Updated: 2026-05-12 18:29:36 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
Today's Microsoft patch Tuesday fixes 137 different vulnerabilities. In addition, the update addresses 137 Chromium-related issues affecting Microsoft Edge.
There are no already disclosed or already exploited vulnerabilities included in today's patches. I removed the Chromium issues from the table below and included only the 137 Microsoft issues to make it more readable.
Note that issues related to Microsoft Azure are labeled as "no customer action required.
Significant Vulnerabilities of interest:
CVE-2026-41103: This vulnerability affects the Microsoft SSO Plugin for Jira & Confluence. Exploitation could lead to an elevation of privileges. Wit
Crowdstrike
May 2026 Patch Tuesday: 30 Critical Vulnerabilities Among 130 CVEs
blogs_crowdstrike
CVE-2026-20929 May 2026 Patch Tuesday: 30 Critical Vulnerabilities Among 130 CVEs
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Video Hi
2026-05-12
Published