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Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2025-4478] Gnome-remote-desktop: freerdp: unauthenticated rdp packet causes segfault in freerdp leading to denial of service

This medium-severity Red Hat Linux advisory covers CVE-2025-4478 affecting Red Hat Enterprise Linux 10, Red Hat package: freerdp.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2025-4478 Source published Source updated

VulniPulse record published

CVE-2025-4478
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

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.

The severity of this issue is assessed as moderate rather than high, primarily because successful exploitation requires the remote installation feature to be explicitly enabled by the system administrator a non-default configuration in most RHEL deployments.

While impactful, this scenario is limited to specific use cases, such as unattended remote installations, and does not result in privilege escalation or arbitrary code execution. Furthermore, the flaw appears to stem from a null-pointer dereference, which generally results in a crash without introducing broader system compromise.

The attack requires network access to the installer at a precise phase of its operation and is constrained by the need for a custom setup (e.g., RDP-based installs).

Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat package: freerdp.

Is CVE-2025-4478 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2025-4478 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2025-4478?

Upgrade to a fixed release named by Red Hat:

  • freerdp-2:3.10.3-3.el10_0
  • RHSA-2025:9307

Confirm against the vendor advisory before you patch.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Fixed versions
  • freerdp-2:3.10.3-3.el10_0
  • RHSA-2025:9307

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

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