Patch tracker / CVE reference / CVE-2025-59230

CVE-2025-59230

CVE-2025-59230 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 7.8 (High). It is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it in the wild, which makes it a fix-first item. Microsoft has shipped the fix: deploy one of the 14 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

HighCISA KEV
7.8
CVSS v3
6.4%
EPSS, 30 days
High
Severity
Yes
Exploited in the wild

Listed in the CISA Known Exploited Vulnerabilities catalog, confirmed exploited in the wild. EPSS exploit probability 6.4%. CVSS 7.8 (High).

This CVE is among the top half of tracked Microsoft CVEs by EPSS exploit probability, and one of 4 actively-exploited CVEs in October 2025.

Senserva AI Opinion for CVE-2025-59230

CVE-2025-59230 is an elevation of privilege flaw in the Windows Remote Access Connection Manager (RasMan) service, affecting Windows 10 Version 1809 and Windows Server 2019. What makes this urgent is not the 6% EPSS score but the CISA KEV listing added 2025-10-14, meaning attackers are already using it to escalate from a local foothold to SYSTEM. Any 1809 or Server 2019 host that still runs the RasMan service, including VPN and dial-up capable machines, is a real target.

Do this: Deploy Microsoft's October 2025 patch for CVE-2025-59230 to all Windows 10 1809 and Server 2019 systems now, prioritizing internet-reachable and multi-user hosts.

AI-generated from public data, 2026-07-22. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for CVE-2025-59230

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Patch now
Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.
Fixed by KB5066586 and 13 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.
Do this now: Patch now and verify deployment on every exposed device.

Official patch(es) for CVE-2025-59230

Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. In Intune or Defender, confirm whether the fixing updates KB5066586, KB5066780, KB5066782, KB5066791, KB5066793, KB5066835, KB5066836, KB5066837, KB5066872, KB5066873, KB5066874, KB5066875, KB5066876, KB5066877 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-2025-59230. 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.

KB5066586KB5066780KB5066782KB5066791KB5066793KB5066835KB5066836KB5066837KB5066872KB5066873KB5066874KB5066875KB5066876KB5066877

Scope and sources

Affected products
Fixed by the same updates
CVE-2025-24990CVE-2025-47827CVE-2025-49708CVE-2025-58715CVE-2025-58716CVE-2025-58718CVE-2025-59295CVE-2025-24052
Authoritative references
Official CVE record (cve.org)NVD detailMicrosoft MSRCCISA KEV catalogFIRST.org EPSS

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
All information provided as is, without warranty; verify against the vendor advisory before acting. All information and usage is subject to the Senserva EULA. Data notice and terms.