HIGH
Microsoft Excel Information Disclosure Vulnerability
Published May 12, 2026
7.8
HIGHCVSS 3.1
EPSS 0.47%
Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Affected products
-
- Version 16.0.1StatusaffectedConstraints<https://aka.ms/OfficeSecurityReleases
- Version
-
- Version 16.0.0.0StatusaffectedConstraints<16.0.5552.1000
- Version
-
- Version 19.0.0StatusaffectedConstraints<https://aka.ms/OfficeSecurityReleases
- Version
-
- Version 16.0.1StatusaffectedConstraints<https://aka.ms/OfficeSecurityReleases
- Version
-
- Version 16.0.0StatusaffectedConstraints<https://aka.ms/OfficeSecurityReleases
- Version
-
- Version 16.0.1StatusaffectedConstraints<16.109.26051019
- Version
-
- Version 16.0.0StatusaffectedConstraints<16.109.26051019
- Version
-
- Version 16.0.0.0StatusaffectedConstraints<16.0.10417.20128
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | n/a |
| ||||||
| Microsoft | Microsoft Excel 2016 | n/a |
| ||||||
| Microsoft | Microsoft Office 2019 | n/a |
| ||||||
| Microsoft | Microsoft Office LTSC 2021 | n/a |
| ||||||
| Microsoft | Microsoft Office LTSC 2024 | n/a |
| ||||||
| Microsoft | Microsoft Office LTSC for Mac 2021 | n/a |
| ||||||
| Microsoft | Microsoft Office LTSC for Mac 2024 | n/a |
| ||||||
| Microsoft | Office Online Server | n/a |
|
OR
- n/a
- n/a
- 2016
- 2016
- 2019
- 2019
- 2021
- 2021
- 2021
- 2024
- 2024
- 2024
- < 16.0.10417.20128
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (1)
References (2)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29642 Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360 vendor-advisorypatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29642 | Advisory | |
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40360 | vendor-advisorypatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published May 12, 2026
Updated Aug 10, 2026
Reserved Apr 11, 2026
Link CVE-2026-40360
CISA Vulnrichment
Updated May 13, 2026
ENISA EUVD
EUVD-2026-29642 Assigner microsoft
Published May 12, 2026
Updated Aug 10, 2026
Exploited since n/a
Link EUVD-2026-29642