CVE-2026-67294

FreeRDP: FreeRDP: Server certificate validation bypass via improper Extended Key Usage (EKU) validation

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Severity

Low

Red Hat Product Security

3.7

CVSS 3.1

Review impact separately from score.

Published · August 1, 2026

Updated · August 5, 2026

Description

A flaw was found in FreeRDP. During client-side server Transport Layer Security (TLS) authentication, FreeRDP improperly validates the Extended Key Usage (EKU) purpose of the peer certificate. This vulnerability allows a certificate intended only for client authentication to be accepted as a server certificate, bypassing critical server certificate purpose validation. This could lead to an attacker presenting a clientAuth-only certificate from a trusted Certificate Authority (CA) to impersonate a legitimate server.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 3.7
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

CWE-295 · Improper Certificate Validation