NULL pointer dereference in Freerdp
CVE-2025-4478
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.005 (41.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Freerdp
- Red Hat Enterprise Linux 10 — versions 2:3.10.3-3.el10_0
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat In-Vehicle Operating System 1
- Red Hat Enterprise Linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- access.redhat.com/errata/RHSA-2025:9307 (vendor-advisory, Vendor Advisory)
- access.redhat.com/security/cve/CVE-2025-4478 (vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (Permissions Required, issue-tracking, Issue Tracking)
- github.com/FreeRDP/FreeRDP/pull/11573 (Patch)
Frequently asked questions
- What is CVE-2025-4478?
- CVE-2025-4478 is a medium-severity vulnerability in Freerdp, classified under NULL Pointer Dereference. CVSS score: 6.5/10. Published 2025-05-16.
- How severe is CVE-2025-4478?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2025-4478 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.