Is CVE-2025-4478 in the CISA KEV catalog?

No. CVE-2025-4478 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-4478?

CVE-2025-4478 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2025-4478?

CVE-2025-4478 has an EPSS score of 0.42% (34th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-4478?

Upgrade freerdp on rhel 10 to 2:3.10.3-3.el10_0 or later. Fixes are available for 24 affected products.

CVE & CISA-KEV Catalog

CVE-2025-4478

MEDIUM

6.5

CVSS v3

NVD

Description

A flaw was found in the FreeRDP used by Anaconda's remote install feature, where a crafted RDP packet could trigger a segmentation fault. This issue causes the service to crash and remain defunct, resulting in a denial of service. It occurs pre-boot and is likely due to a NULL pointer dereference. Rebooting is required to recover the system.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

freerdpRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdpRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-debuginfoRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-debugsourceRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-debugsourceRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-develRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-develRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-libsRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-libsRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-libs-debuginfoRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-libs-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-serverRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-serverRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-server-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp-server-debuginfoRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

libwinprRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

libwinprRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

libwinpr-debuginfoRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

libwinpr-debuginfoRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

libwinpr-develRocky

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

libwinpr-develRed Hat / RHEL

Fixed in:2:3.10.3-3.el10_0RHSA-2025:9307

freerdp3Ubuntu

Fixed in:3.5.1+dfsg1-0ubuntu1.1USN-7624-1

libfreerdp3-3Ubuntu

Fixed in:3.5.1+dfsg1-0ubuntu1.1USN-7624-1

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 ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.42%probability of exploitation in 30 days

34thpercentile

Low risk: more likely to be exploited than 34% of all known CVEs.

References

Patch1

github.com

Vendor Advisory2

Issue Tracking1

bugzilla.redhat.com

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	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 2026-06-30.