VDB
msrc_CVE-2026-40367
msrc_CVE-2026-40367
PUBLISHED
CVSS 8.399999618530273 HIGH
Risk Scores
CVSS 3.1
8.399999618530273
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Microsoft Office LTSC 2021 for 32-bit editions https://aka.ms/OfficeSecurityReleases | ||
| Microsoft 365 Apps for Enterprise for 64-bit Systems https://aka.ms/OfficeSecurityReleases | ||
| Microsoft Office 2019 for 64-bit editions <https://aka.ms/OfficeSecurityReleases | ||
| Microsoft SharePoint Server 2019 <16.0.10417.20128 | ||
| Microsoft Office 2019 for 32-bit editions <https://aka.ms/OfficeSecurityReleases | ||
| Microsoft Office LTSC 2021 for 64-bit editions <https://aka.ms/OfficeSecurityReleases | ||
| Microsoft SharePoint Enterprise Server 2016 <16.0.5552.1002 | ||
| Microsoft SharePoint Server Subscription Edition 16.0.19725.20280 | ||
| Microsoft SharePoint Enterprise Server 2016 16.0.5552.1002 | ||
| Microsoft Office 2019 for 64-bit editions https://aka.ms/OfficeSecurityReleases | ||
| Microsoft Office 2019 for 32-bit editions https://aka.ms/OfficeSecurityReleases | ||
| Microsoft SharePoint Server 2019 16.0.10417.20128 | ||
| Microsoft Office LTSC for Mac 2021 16.109.26051019 | ||
| Microsoft 365 Apps for Enterprise for 64-bit Systems <https://aka.ms/OfficeSecurityReleases | ||
| Microsoft Office LTSC for Mac 2021 <16.109.26051019 | ||
| Microsoft Office LTSC 2021 for 32-bit editions <https://aka.ms/OfficeSecurityReleases | ||
| Microsoft 365 Apps for Enterprise for 32-bit Systems https://aka.ms/OfficeSecurityReleases | ||
| Microsoft Office LTSC 2021 for 64-bit editions https://aka.ms/OfficeSecurityReleases | ||
| Microsoft SharePoint Server Subscription Edition <16.0.19725.20280 | ||
| Microsoft 365 Apps for Enterprise for 32-bit Systems <https://aka.ms/OfficeSecurityReleases |
Exploit Intelligence
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40367 (circl)
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40367.json (circl)
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 (circl)
- https://support.microsoft.com/lifecycle (circl)
- https://www.first.org/cvss (circl)
- https://support.microsoft.com/help/5002868 (circl)
- https://support.microsoft.com/help/5002869 (circl)
- https://support.microsoft.com/help/5002870 (circl)
- https://support.microsoft.com/help/5002872 (circl)
- https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates (circl)
…and 3 more exploits
Timeline
- May 12, 2026 CVE Published
- May 13, 2026 Security Advisory
- May 13, 2026 Security Advisory
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-40367 advisory
- https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-40367.json advisory
- https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1 url
- https://support.microsoft.com/lifecycle url
- https://www.first.org/cvss url
- https://support.microsoft.com/help/5002868 fix
- https://support.microsoft.com/help/5002869 fix
- https://support.microsoft.com/help/5002870 fix
- https://support.microsoft.com/help/5002872 fix
- https://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates fix
- https://go.microsoft.com/fwlink/p/?linkid=831049 fix
- https://support.microsoft.com/help/5002863 fix
- https://support.microsoft.com/help/5002858 fix