CVE-2026-67292
Description
A flaw was found in FreeRDP, a remote desktop protocol client. A malicious server or WebSocket peer could send a specially crafted Ping control frame. This could cause the client to send an overly long Pong reply, leading to the disclosure of sensitive information beyond the intended payload. Additionally, sending a zero-length Ping could trigger an assertion, causing the client to terminate and resulting in a denial of service.
Statement
This issue is classified as Moderate severity because successful exploitation requires a user to connect to a malicious gateway or server, where a crafted Ping control frame can trigger a client memory disclosure or cause an application crash leading to a denial of service.
Mitigation
To mitigate this vulnerability, avoid connecting to untrusted RDP gateways when using FreeRDP. This flaw specifically affects the client when interacting with a malicious gateway, which can exploit the WebSocket transport to trigger information disclosure or a denial of service.
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).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 6.5 | N/A | 6.5 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | Low | N/A | Low |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | Low | N/A | Low |
| Integrity Impact | None | N/A | None |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
cve.org: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Understanding the Weakness (CWE)
Integrity,Confidentiality,Availability
Technical Impact: Read Memory; Modify Memory; Execute Unauthorized Code or Commands
Buffer overflows often can be used to execute arbitrary code, which is usually outside the scope of a program's implicit security policy. This can often be used to subvert any other security service.
Availability
Technical Impact: Modify Memory; DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU)
Buffer overflows generally lead to crashes. Other attacks leading to lack of availability are possible, including putting the program into an infinite loop.
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