CVE-2026-40360
published 2026-05-12CVE-2026-40360: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
PriorityP341high7.8CVSS 3.1
AVLACLPRNUIRSUCHIHAH
EPSS
0.41%
33.4th percentile
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | excel | — | — |
| microsoft | microsoft_365_apps_for_enterprise | >= 16.0.1 < https://aka.ms/OfficeSecurityReleases | https://aka.ms/OfficeSecurityReleases |
| microsoft | microsoft_excel_2016 | >= 16.0.0.0 < 16.0.5552.1000 | 16.0.5552.1000 |
| 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 | office | — | — |
| microsoft | office_long_term_servicing_channel | — | — |
| microsoft | office_long_term_servicing_channel | — | — |
| microsoft | office_online_server | < 16.0.10417.20128 | 16.0.10417.20128 |
| microsoft | office_online_server | >= 16.0.0.0 < 16.0.10417.20128 | 16.0.10417.20128 |
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GHSA
GHSA-m94j-ww5w-723q: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally
ghsa_unreviewed·2026-05-12
CVE-2026-40360 [HIGH] CWE-125 GHSA-m94j-ww5w-723q: Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
VulDB
Microsoft Excel up to Office Online Server out-of-bounds
vuldb·2026-05-12
CVE-2026-40360 [CRITICAL] Microsoft Excel up to Office Online Server out-of-bounds
A vulnerability classified as critical has been found in Microsoft Excel up to Office Online Server. This affects an unknown function. The manipulation leads to out-of-bounds read.
This vulnerability is listed as CVE-2026-40360. The attack may be initiated remotely. There is no available exploit.
It is recommended to upgrade the affected component.
No detection rules found.
No public exploits indexed.
2026-05-12
Published