Medium [CVE-2026-114047] proxy improper TLS certificate validation allows target impersonation
This medium-severity Red Hat Linux advisory covers CVE-2026-114047 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7.
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Summary
A flaw was found in FreeRDP. The FreeRDP proxy accepts untrusted target TLS certificates when no verification module is configured.
A network-positioned attacker who can intercept the proxy's outbound connection can present a self-signed or wrong-hostname certificate to impersonate the RDP target and receive proxied session data. This issue affects FreeRDP from 2.0.0 before 3.32.0.
This issue is rated Moderate because exploitation requires a network man-in-the-middle position on the path between freerdp-proxy and the configured RDP target, and a user must initiate a proxied session (UI:R).
Attack complexity is High because the attacker must intercept or redirect the proxy's outbound TLS connection and successfully present an accepted certificate when no rejecting verification module is configured. Successful exploitation can fully compromise confidentiality and integrity of the proxied RDP session, but availability impact is not demonstrated.
Red Hat severity: Moderate — CVSS 6.8 (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N). Weakness: CWE-295.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9. Red Hat does not currently list a fixing RHSA for this CVE.
Affected products named by the advisory: Red Hat package: freerdp.
- < 2.0.0
- < 3.32.0
Official advisory · high-confidence parse· fetched 37 minutes ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 37 minutes ago·verify at source
Mitigation checklist
- Restrict freerdp-proxy outbound connectivity to trusted RDP targets and trusted networks only. Configure an explicit TLS certificate verification module for the proxy's target connection and fail closed when verification is unavailable. If freerdp-proxy is unused, remove or disable the freerdp-server/proxy packages.
Official advisory · high-confidence parse· fetched 37 minutes ago·verify at source
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