Microsoft Office Excel Information Disclosure Vulnerability
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely CVE-2026-118728 · score 6.5/10
What could go wrong?
Private information could leak to someone who should not see it.
How urgent is it?
Check Microsoft’s page for details.
Who is affected?
Microsoft Office LTSC 2021 for 64-bit editions, Microsoft Office LTSC 2021 for 32-bit editions, Microsoft Office LTSC 2024 for 64-bit editions, Microsoft Office LTSC 2024 for 32-bit editions, Microsoft 365 Apps for Enterprise for 64-bit Systems, Microsoft 365 Apps for Enterprise for 32-bit Systems, Microsoft Office LTSC for Mac 2021, Microsoft Office LTSC for Mac 2024 and 2 more versions
What should I do?
Install this month’s updates via Windows Update, Intune or your update tool, then restart.
Known problems
Microsoft lists known issues per update: KB5002946. Official page.