Is CVE-2025-59230 in the CISA KEV catalog?

Yes. CVE-2025-59230 is on the CISA Known Exploited Vulnerabilities list, added 2025-10-14.

What is the CVSS severity of CVE-2025-59230?

CVE-2025-59230 has a CVSS v3 base score of 7.8 (Important).

What is the EPSS score for CVE-2025-59230?

CVE-2025-59230 has an EPSS score of 2.67% (84th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-59230?

Install KB5066837 for Windows 10. Fixes are available for 24 affected products.

CVE & CISA-KEV Catalog

CVE-2025-59230

HIGHCISA KEVEPSS 84th pctl

7.8

CVSS v3

NVD

Description

Improper access control in Windows Remote Access Connection Manager allows an authorized attacker to elevate privileges locally.

CWE-284Improper Access Control

How to fix

Remediation Available

Windows 10Windows

Install:KB5066837Microsoft

Windows 10 Version 1607Windows

Install:KB5066836Microsoft

Windows 10 Version 1809Windows

Install:KB5066586Microsoft

Windows 10 Version 21H2Windows

Install:KB5066791Microsoft

Windows 10 Version 22H2Windows

Install:KB5066791Microsoft

Windows 11 Version 22H2Windows

Install:KB5066793Microsoft

Windows 11 Version 23H2Windows

Install:KB5066793Microsoft

Windows 11 Version 24H2Windows

Install:KB5066835Microsoft

Windows 11 Version 25H2Windows

Install:KB5066835Microsoft

Windows Server 2008Windows

Install:KB5066874Microsoft

Install:KB5066877Microsoft

Windows Server 2008 R2Windows

Install:KB5066876Microsoft

Install:KB5066872Microsoft

Windows Server 2012Windows

Install:KB5066875Microsoft

Windows Server 2012 (Server Core installation)Windows

Install:KB5066875Microsoft

Windows Server 2012 R2Windows

Install:KB5066873Microsoft

Windows Server 2012 R2 (Server Core installation)Windows

Install:KB5066873Microsoft

Windows Server 2016Windows

Install:KB5066836Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5066836Microsoft

Windows Server 2019Windows

Install:KB5066586Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5066586Microsoft

Windows Server 2022Windows

Install:KB5066782Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5066782Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)Windows

Install:KB5066780Microsoft

Windows Server 2025Windows

Install:KB5066835Microsoft

Windows Server 2025 (Server Core installation)Windows

Install:KB5066835Microsoft

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

Exploit Intelligence

2.67%probability of exploitation in 30 days

84thpercentile

Elevated risk: more likely to be exploited than 84% of all known CVEs.

Known Exploited Vulnerability (CISA KEV)

Microsoft Windows Improper Access Control Vulnerability

Microsoft Windows contains an improper access control vulnerability in Windows Remote Access Connection Manager which could allow an authorized attacker to elevate privileges locally.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Remediation due: 2025-11-04

References

Vendor Advisory1

msrc.microsoft.com

Mitigation1

vicarius.io

Third-Party Advisory1

vicarius.io

Government Resource1

cisa.gov

Related Vulnerabilities

Other CWE-284 (Improper Access Control) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-27350	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2019-1653	High	7.5	100%	KEV	-
CVE-2023-23752	Medium	5.3	100%	KEV	Fix
CVE-2023-38205	High	7.5	100%	KEV	-
CVE-2023-29298	High	7.5	100%	KEV	-
CVE-2024-27348	Critical	9.8	99%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-03.