CVE-2026-40420
Modified Modified - Updated After Analysis
BaseFortify

Publication date: 2026-05-12

Last updated on: 2026-06-01

Assigner: Microsoft Corporation

Description
Use after free in Microsoft Office allows an authorized attacker to elevate privileges locally.
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Meta Information
Published
2026-05-12
Last Modified
2026-06-01
Generated
2026-06-10
EPSS Evaluated
2026-06-08
NVD
CVE-2026-40420
Affected Vendors & Products
Showing 8 associated CPEs
Vendor Product Version / Range
microsoft 365_apps *
microsoft 365_apps *
microsoft office 2019
microsoft office 2019
microsoft office_long_term_servicing_channel 2021
microsoft office_long_term_servicing_channel 2021
microsoft office_long_term_servicing_channel 2024
microsoft office_long_term_servicing_channel 2024
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
Attack-Flow Graph
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