FreeRDP before 3.30.0 contains a server-side authentication bypass in the RDSTLS handshake. When a server is configured with RdstlsSecurity = TRUE, the handshake dispatches inbound PDUs based solely on the attacker-supplied wire pduType without verifying that the received PDU is the one required at the current step. Because the rdpRdstls object is calloc-zeroed, its resultCode defaults to 0 (RDSTLS_RESULT_SUCCESS). An unauthenticated remote client can send a Capabilities PDU instead of the required Authentication Request PDU; rdstls_process_capabilities() returns success without ever setting resultCode, so the server responds with an AUTHRSP carrying resultCode SUCCESS and treats the session as authenticated without evaluating any password, redirection GUID, or auto-reconnect cookie. This affects the released FreeRDP 3.x series (e.g., 3.27.1) and master HEAD; at the time of the advisory no patched version was available.
This CVE has been withdrawn by MITRE
MITRE marked CVE-2026-72746 as REJECTED on . It is no longer considered a valid vulnerability record. The original content below is preserved for historical reference only.
Reason given by MITRE
This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it's a duplicate of CVE-2026-73241.
CVE-2026-72746
✕ Withdrawn — historical dataHIGHPre-NVD 7.5
7.5CVSS
- CVSS v3
- 7.5
- EchelonGraph score
- Not yet assessedThis CVE record was withdrawn by its numbering authority, so there is no vulnerability to rate.
- EPSS PROB
- —
- EPSS %ILE
- —
- KEV
- —Not applicable: this CVE ID was withdrawn
Published
August 11, 2026
Last Modified
August 11, 2026
References (3)
- disclosure@vulncheckhttps://github.com/FreeRDP/FreeRDP/commit/b05a9510787c83c87ffc5fa8d7cc9f06ed971695
- disclosure@vulncheck · CISA-ADPhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rqgv-grx4-xm6x
- disclosure@vulncheckhttps://www.vulncheck.com/advisories/freerdp-before-rdstls-server-authentication-bypass-via-pdu-type-confusion
Frequently asked(4)
What is CVE-2026-72746?
CVE-2026-72746 is a rejected CVE ID: its record was withdrawn on August 12, 2026 and no longer describes a vulnerability. Reason given: This CVE ID has been rejected or withdrawn by its CVE Numbering Authority as it's a duplicate of CVE-2026-73241. Its record names CVE-2026-73241 as the replacement.
When was the CVE record for CVE-2026-72746 published?
The CVE record for CVE-2026-72746 was published on August 11, 2026. EchelonGraph's copy of the record carries a last-modified date of August 11, 2026; the record at its source may have been updated since.
What is the CVSS score of CVE-2026-72746?
CVE-2026-72746 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72746?
There is nothing to remediate under CVE-2026-72746: it is a rejected (withdrawn) CVE ID and no longer describes a vulnerability. Its record names CVE-2026-73241 as the replacement; act on that CVE instead.