CVE-2026-109953
Description
A flaw was found in FreeRDP. When connecting using the restricted admin mode option, the client fails to suppress credential delegation, inadvertently transmitting administrative credentials in cleartext to the remote server. A compromised destination host or an on-path attacker can intercept these credentials, resulting in sensitive information disclosure and potential unauthorized administrative access.
Statement
This flaw is rated Moderate because insufficiently protected credentials/secrets may be exposed under non-default conditions (AC:H) after the user connects to a malicious peer (UI:R). Integrity and availability are not directly impacted.
Mitigation
Restrict FreeRDP clients to trusted RDP servers and networks.
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 | 5.3 | N/A | 5.3 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | High |
| Privileges Required | None | N/A | None |
| User Interaction | Required | N/A | Required |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | High | N/A | High |
| Integrity Impact | None | N/A | None |
| Availability Impact | None | N/A | None |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Red Hat CVSS v3 Score Explanation
Red Hat CVSS reflects FreeRDP exposure after applying client/server interaction model. Score 5.3 maps to MODERATE.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Gain Privileges or Assume Identity
An attacker could gain access to user accounts and access sensitive data used by the user accounts.
Frequently Asked Questions
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