CVE-2026-64621
Description
A flaw was found in FreeRDP, a free implementation of the Remote Desktop Protocol. A double-free vulnerability exists when a FreeRDP client processes a specially crafted .rdp connection file. An attacker could convince a victim to open a malicious .rdp file, leading to a size-controlled double-free. This could potentially allow for arbitrary code execution on the affected system.
Statement
This Important flaw in FreeRDP clients allows for arbitrary code execution when a user opens a specially crafted .rdp connection file. The vulnerability stems from a double-free condition during the parsing of the selectedmonitors field, which can be triggered by an attacker convincing a victim to open a malicious file. This risk is elevated as it affects default configurations of FreeRDP command-line interface clients.
Mitigation
The vulnerability is triggered by opening a malicious `.rdp` file. Users should exercise caution and avoid opening `.rdp` files from untrusted sources.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.3 | N/A | 7.3 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
Understanding the Weakness (CWE)
Availability,Integrity
Technical Impact: DoS: Crash, Exit, or Restart
Frequently Asked Questions
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