FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.20.0, a vulnerability exists in FreeRDP’s certificate handling code on Windows platforms. The function `freerdp_certificate_data_hash_ uses` the Microsoft-specific `_snprintf` function to format certificate cache filenames without guaranteeing NUL termination when truncation occurs. According to Microsoft documentation, `_snprintf` does not append a terminating NUL byte if the formatted output exceeds the destination buffer size. If an attacker controls the hostname value (for example via server redirection or a crafted .rdp file), the resulting filename buffer may not be NUL-terminated. Subsequent string operations performed on this buffer may read beyond the allocated memory region, resulting in a heap-based out-of-bounds read. In default configurations, the connection is typically terminated before sensitive data can be meaningfully exposed, but unintended memory read or a client crash may still occur under certain conditions. Version 3.20.0 has a patch for the issue.
References
Configurations
History
02 Jan 2026, 16:41
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Freerdp
Freerdp freerdp |
|
| CPE | cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:* | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 9.1 |
| References | () https://github.com/FreeRDP/FreeRDP/commit/a0b21f992a9de1de2468fc9e600aa2b7a4066307 - Patch | |
| References | () https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h78c-5cjx-jw6x - Vendor Advisory |
17 Dec 2025, 22:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-12-17 22:16
Updated : 2026-01-02 16:41
NVD link : CVE-2025-68118
Mitre link : CVE-2025-68118
CVE.ORG link : CVE-2025-68118
JSON object : View
Products Affected
freerdp
- freerdp
CWE
CWE-125
Out-of-bounds Read