# CVE-2025-4478: Gnome-remote-desktop: freerdp: unauthenticated rdp packet causes segfault in freerdp leading to denial of service > A crafted RDP packet triggers a segmentation fault in FreeRDP during Anaconda's remote install, causing a denial of service requiring a reboot. - **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`) - **Exploited in the wild:** Not known - **Login needed:** Not needed - **Attackable:** Over the internet - **Victim action needed:** A user has to click or open something - **Fix available:** Yes - **Published:** 16 May 2025 - **Updated:** 30 Jun 2026 - **Also known as:** ALSA-2025:9307, DEBIAN-CVE-2025-4478, GHSA-3p57-rq4q-233x, RHSA-2025:9307, RLSA-2025:9307, UBUNTU-CVE-2025-4478, USN-7624-1 ## What is CVE-2025-4478? CVE-2025-4478 is a medium-severity vulnerability in Freerdp Freerdp, published on 16 May 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. ### Official 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. Weakness: CWE-476 (NULL Pointer Dereference) ## Which versions are affected by CVE-2025-4478? It affects 2 products. | Package | Ecosystem | Affected | Fixed in | | --- | --- | --- | --- | | `freerdp` | AlmaLinux:10 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-devel` | AlmaLinux:10 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-libs` | AlmaLinux:10 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-server` | AlmaLinux:10 | All versions | 2:3.10.3-3.el10_0 | | `libwinpr` | AlmaLinux:10 | All versions | 2:3.10.3-3.el10_0 | | `libwinpr-devel` | AlmaLinux:10 | All versions | 2:3.10.3-3.el10_0 | | `freerdp` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-debugsource` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-devel` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-libs` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-libs-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-server` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp-server-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `libwinpr` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `libwinpr-debuginfo` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `libwinpr-devel` | Red Hat:enterprise_linux:10.0 | All versions | 2:3.10.3-3.el10_0 | | `freerdp` | Rocky Linux:10 | All versions | 2:3.10.3-3.el10_0 | Products: Freerdp Freerdp, Redhat Enterprise Linux. ## How do I fix CVE-2025-4478? Apply the vendor's patch. ## Is CVE-2025-4478 being exploited? There is no known exploitation of CVE-2025-4478 in the wild and no public exploit code. ## Other vulnerabilities in Freerdp Freerdp - [CVE-2021-37594](https://insights.sbomify.com/CVE-2021-37594/): Other in n/a (critical 9.8) - [CVE-2021-37595](https://insights.sbomify.com/CVE-2021-37595/): Other in n/a (critical 9.8) - [CVE-2026-67305](https://insights.sbomify.com/CVE-2026-67305/): FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr (critical 9.4) - [CVE-2026-66402](https://insights.sbomify.com/CVE-2026-66402/): FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass (critical 9.3) - [CVE-2026-67289](https://insights.sbomify.com/CVE-2026-67289/): FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection (critical 9.3) ## Fix prompt for AI coding agents ```text Check this codebase for CVE-2025-4478 and fix it if it is affected. What it is: CVE-2025-4478 is a medium-severity vulnerability in Freerdp Freerdp, published on 16 May 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link. Exploitation: There is no known exploitation of CVE-2025-4478 in the wild and no public exploit code. Affected product: Freerdp Freerdp. No package-level version data is available, so check the vendor advisory linked from the reference page. Task: 1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies. 2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it. 3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead. 4. Run the tests and summarise what changed and why. 5. If nothing in the project is affected, say so and change nothing. Reference: https://insights.sbomify.com/CVE-2025-4478/ (Markdown: https://insights.sbomify.com/CVE-2025-4478/index.md) ``` ## Sources - CVE record: https://www.cve.org/CVERecord?id=CVE-2025-4478 - NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-4478 - OSV: https://osv.dev/vulnerability/CVE-2025-4478 --- From sbomify Insights: https://insights.sbomify.com/CVE-2025-4478/ Summaries are generated and may contain mistakes; the official description above is the record.