Patch tracker / CVE reference / CVE-2025-54899
CVE-2025-54899
CVE-2025-54899 is a high severity Microsoft vulnerability with a CVSS score of 7.8. Microsoft has shipped the fix: deploy the update below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.
Risk summary
Not in the CISA KEV catalog. EPSS exploit probability <1%. CVSS 7.8 (High).
This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.
Unlike its Office Online Server siblings in this batch, this Excel remote code execution bug lands squarely on end-user machines: Office 2019 on both architectures and Microsoft 365 Apps for Enterprise 32-bit. Opening a crafted workbook is enough to run attacker code as the logged-in user. Severity is High (CVSS 7.8) but EPSS sits at 1 percent with no confirmed exploitation, so treat it as standard monthly patching.
Do this: Include this in your next Office update wave and confirm Microsoft 365 Apps clients are on the current channel build.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-54899
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2025-54899
Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing update KB5002782 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.
Apply the Microsoft security update below to fix CVE-2025-54899. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.
Scope and sources
- Affected products
- Fixed by the same update
- Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.