Is CVE-2025-21349 in the CISA KEV catalog?

No. CVE-2025-21349 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-21349?

CVE-2025-21349 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2025-21349?

CVE-2025-21349 has an EPSS score of 1.05% (60th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-21349?

Install KB5052040 for Windows 10. Fixes are available for 17 affected products.

CVE & CISA-KEV Catalog

CVE-2025-21349

MEDIUM

6.8

CVSS v3

NVD

Description

Windows Remote Desktop Configuration Service Tampering Vulnerability

CWE-287Improper Authentication

How to fix

Remediation Available

Windows 10Windows

Install:KB5052040Microsoft

Windows 10 Version 1607Windows

Install:KB5052006Microsoft

Windows 10 Version 1809Windows

Install:KB5052000Microsoft

Windows 10 Version 21H2Windows

Install:KB5051974Microsoft

Windows 10 Version 22H2Windows

Install:KB5051974Microsoft

Windows 11 Version 22H2Windows

Install:KB5051989Microsoft

Windows 11 Version 23H2Windows

Install:KB5051989Microsoft

Windows 11 Version 24H2Windows

Install:KB5052105

Install:KB5051987Microsoft

Windows Server 2016Windows

Install:KB5052006Microsoft

Windows Server 2016 (Server Core installation)Windows

Install:KB5052006Microsoft

Windows Server 2019Windows

Install:KB5052000Microsoft

Windows Server 2019 (Server Core installation)Windows

Install:KB5052000Microsoft

Windows Server 2022Windows

Install:KB5052106

Install:KB5051979Microsoft

Windows Server 2022 (Server Core installation)Windows

Install:KB5051979Microsoft

Install:KB5052106

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

Install:KB5051980Microsoft

Windows Server 2025Windows

Install:KB5051987Microsoft

Install:KB5052105

Windows Server 2025 (Server Core installation)Windows

Install:KB5051987Microsoft

Install:KB5052105

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 VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N

Exploit Intelligence

1.05%probability of exploitation in 30 days

60thpercentile

Moderate risk: more likely to be exploited than 60% of all known CVEs.

References

Patch1

msrc.microsoft.com

Related Vulnerabilities

Other CWE-287 (Improper Authentication) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-35082	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-35078	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2017-7921	Critical	9.8	100%	KEV	-
CVE-2024-7593	Critical	9.8	100%	KEV	-
CVE-2023-46805	High	8.2	100%	KEV + Ransom	-
CVE-2022-40684	Critical	9.8	100%	KEV + Ransom	Fix

Embed a live status badge for CVE-2025-21349

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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 2025-02-28.