Patch tracker / CVE reference / CVE-2025-59240
CVE-2025-59240
CVE-2025-59240 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.
High severity Microsoft vulnerability, CVSS 7.8. Fixed by 1 Microsoft security update.
Risk summary
Senserva AI Opinion for CVE-2025-59240
This Excel information disclosure targets Office LTSC 2021 and LTSC 2024, the perpetual-license editions rather than Microsoft 365 Apps, so exposure is limited to organizations still running those standalone builds. Client-application document bugs like this typically need a user to open a crafted file, and the 1 percent EPSS score reflects that indirection compared with the network-facing Windows CVEs in this batch. High severity at 7.8 still warrants inclusion in the normal Office update cycle.
Do this: Push the Office LTSC update to any 2021 or 2024 LTSC installations found in the environment during the next patch cycle.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-59240
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Updated August 7, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Full tracking and change history for CVE-2025-59240
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
Exploitation and severity
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.
Official patch(es) for CVE-2025-59240
Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing update KB5002811 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-2025-59240. 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.
Affected products
Fixed by the same update
If you are patching CVE-2025-59240, the same update also fixes these:
Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.