Patch tracker / CVE reference / CVE-2025-59249
CVE-2025-59249
CVE-2025-59249 is a high severity Microsoft vulnerability with a CVSS score of 8.8. Microsoft has shipped the fix: deploy one of the 4 updates 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 8.8 (High).
This CVE is among the lower half of tracked Microsoft CVEs by EPSS exploit probability.
Exchange Server privilege escalation flaws are prized by attackers because Exchange holds mail for the whole organization and often runs with high directory privileges. This one is rated High Severity at CVSS 8.8 and affects Exchange 2016 CU23 and Exchange 2019 CU14 and CU15, with a low 1% EPSS score at present.
Do this: Update on-premises Exchange 2016 and 2019 servers now, and treat any Exchange box that cannot be patched as a candidate for migration.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2025-59249
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Official patch(es) for CVE-2025-59249
Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing updates KB5066366, KB5066367, KB5066368, KB5066369 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.
Apply the Microsoft security updates below to fix CVE-2025-59249. 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 updates
- Authoritative references
Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.