CVE-2026-70318HighCVSS 5.5
Microsoft Excel Information Disclosure Vulnerability
🔗 CVE IDs covered (1)
📋 Description
Improper input validation in Microsoft Office Excel allows an unauthorized attacker to disclose information locally.
🎯 Affected products13
- Microsoft 365 Apps for Enterprise for 32-bit Systems
- Microsoft 365 Apps for Enterprise for 64-bit Systems
- Microsoft Office 2019 for 32-bit editions
- Microsoft Office 2019 for 64-bit editions
- Microsoft Office 365 for Mac
- Microsoft Office LTSC 2021 for 32-bit editions
- Microsoft Office LTSC 2021 for 64-bit editions
- Microsoft Office LTSC 2024 for 32-bit editions
- Microsoft Office LTSC 2024 for 64-bit editions
- Microsoft Office LTSC for Mac 2021
- Microsoft Office LTSC for Mac 2024
- Microsoft Word 2016 (32-bit edition)
- Microsoft Word 2016 (64-bit edition)
✅ Remediation
KBClick to Run (Security Update) — fixed build https://aka.ms/OfficeSecurityReleases KBRelease Notes (Security Update) — fixed build 16.112.26081010 KB5002901 (Security Update) — fixed build 16.0.5565.1000
🔗 References (6)
- advisoryhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70318
- referencehttps://docs.microsoft.com/en-us/officeupdates/microsoft365-apps-security-updates
- patchhttps://go.microsoft.com/fwlink/p/?linkid=831049
- patchhttps://www.microsoft.com/en-us/download/details.aspx?id=108769
- referencehttps://support.microsoft.com/help/5002901
- patchhttps://www.microsoft.com/en-us/microsoft-365/mac/microsoft-365-for-mac?msockid=35f9adb0e74b61392038b90de6fe608c