CVE-2026-73241 Auth bypass in FreeRDP
Remote attackers can bypass RDSTLS server authentication in FreeRDP by sending a specific PDU, avoiding credential checks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-73241?
CVE-2026-73241 is a high-severity authentication bypass vulnerability in Freerdp Freerdp, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.30.0, FreeRDP server-side RDSTLS in libfreerdp/core/rdstls.c accepts an attacker-supplied RDSTLS_TYPE_CAPABILITIES PDU while rdstls_server_authenticate is waiting for RDSTLS_TYPE_AUTHREQ, leaving resultCode at RDSTLS_RESULT_SUCCESS and allowing a remote unauthenticated client to bypass the RedirectionGuid, username, domain, or password checks. This issue is fixed in version 3.30.0.
Weakness: CWE-287
Which versions are affected by CVE-2026-73241?
It affects 1 product.
Products include Freerdp Freerdp.
How do I fix CVE-2026-73241?
Upgrade to a fixed version.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-73241 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-73241 exists.
Other vulnerabilities in Freerdp Freerdp
- CVE-2021-37594 Other in n/a
- CVE-2021-37595 Other in n/a
- CVE-2026-67305 FreeRDP Windows Client before 3.29.0 Heap Buffer Overflow via Cliprdr
- CVE-2026-66402 FreeRDP before 3.29.0 TLS Certificate Identity Validation Bypass
- CVE-2026-67289 FreeRDP before 3.29.0 HTTP Proxy Request Injection via Redirection
Sources
Also known as CVE-2026-72746, DEBIAN-CVE-2026-73241, UBUNTU-CVE-2026-73241.