{"id":"CVE-2026-73241","aliases":["ALSA-2026:61378","DEBIAN-CVE-2026-73241","EUVD-2026-56934","GHSA-rqgv-grx4-xm6x","RHSA-2026:61378","RHSA-2026:68706","RLSA-2026:61378","UBUNTU-CVE-2026-73241"],"status":"published","title":"FreeRDP: RDSTLS server authentication bypass: a credential-less Capabilities PDU is accepted at the auth step (fail-open `resultCode`)","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.","severity":{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00468,"percentile":0.40756,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2026-08-11T12:17:00.687Z","modified":"2026-10-29T11:30:48Z","fixes":[{"ecosystem":"Debian:14","package":"freerdp3","fixed_in":["3.30.0+dfsg-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"freerdp3","fixed_in":["3.30.0+dfsg-0ubuntu0.24.04.1"],"sources":["osv"]},{"ecosystem":"Ubuntu:26.04:LTS","package":"freerdp3","fixed_in":["3.30.0+dfsg-0ubuntu0.26.04.1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"AlmaLinux:10","package":"freerdp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.10.3-12.el10_2.10"}]}],"bundled":13},{"source":"osv","ecosystem":"AlmaLinux:10","package":"freerdp-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.10.3-12.el10_2.10"}]}],"bundled":13},{"source":"osv","ecosystem":"AlmaLinux:10","package":"freerdp-libs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.10.3-12.el10_2.10"}]}],"bundled":13},{"source":"osv","ecosystem":"AlmaLinux:10","package":"freerdp-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.10.3-12.el10_2.10"}]}],"bundled":13},{"source":"osv","ecosystem":"AlmaLinux:10","package":"libwinpr","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.10.3-12.el10_2.10"}]}],"bundled":13},{"source":"osv","ecosystem":"AlmaLinux:10","package":"libwinpr-devel","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2:3.10.3-12.el10_2.10"}]}],"bundled":13},{"source":"osv","ecosystem":"Debian:12","package":"freerdp2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.10.0+dfsg1-1","2.10.0+dfsg1-1.1","2.11.2+dfsg1-1","2.11.2+dfsg1-1.1~exp1","2.11.2+dfsg1-1.1~exp2","2.11.5+dfsg1-1","2.11.7+dfsg1-1","2.11.7+dfsg1-2","2.11.7+dfsg1-3","2.11.7+dfsg1-4","2.11.7+dfsg1-5","2.11.7+dfsg1-6","2.11.7+dfsg1-6~deb12u1"]},{"source":"osv","ecosystem":"Debian:13","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.15.0+dfsg-2.1","3.15.0+dfsg-2.1+deb13u1","3.15.0+dfsg-2.1+deb13u2","3.15.0+dfsg-2.1+deb13u3","3.16.0+dfsg-1","3.16.0+dfsg-2","3.17.0+dfsg-1","3.17.1+dfsg-1","3.17.1+dfsg-2","3.17.2+dfsg-1","3.17.2+dfsg-2","3.17.2+dfsg-3","3.18.0+dfsg-1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.22.0+dfsg-1~bpo13+0","3.22.0+dfsg-1~bpo13+1","3.22.0+dfsg-3","3.23.0+dfsg-1","3.23.0+dfsg-1~bpo13+1","3.24.0+dfsg-1","3.24.0+dfsg-2","3.24.1+dfsg-1","3.24.2+dfsg-1","3.24.2+dfsg-1~bpo13+1","3.25.0+dfsg-1","3.25.0+dfsg-2","3.25.0+dfsg-3","3.25.0+dfsg-4","3.25.0+dfsg-5","3.26.0+dfsg-1","3.26.0+dfsg-1~bpo13+1","3.27.0+dfsg-1","3.27.1+dfsg-1","3.28.0+dfsg-1","3.28.0+dfsg-2","3.29.0+dfsg-1","3.30.0+dfsg-1","3.30.0+dfsg-1~bpo13+1","3.31.0+dfsg-1","3.31.1+dfsg-1","3.31.1+dfsg-1~bpo13+1","3.32.0+dfsg-1"]},{"source":"osv","ecosystem":"Debian:14","package":"freerdp3","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.30.0+dfsg-1"}]}],"versions":["3.15.0+dfsg-2.1","3.16.0+dfsg-1","3.16.0+dfsg-2","3.17.0+dfsg-1","3.17.1+dfsg-1","3.17.1+dfsg-2","3.17.2+dfsg-1","3.17.2+dfsg-2","3.17.2+dfsg-3","3.18.0+dfsg-1","3.19.0+dfsg-1","3.19.1+dfsg-1","3.20.0+dfsg-1","3.20.2+dfsg-1","3.21.0+dfsg-1","3.22.0+dfsg-1","3.22.0+dfsg-1~bpo13+0","3.22.0+dfsg-1~bpo13+1","3.22.0+dfsg-3","3.23.0+dfsg-1","3.23.0+dfsg-1~bpo13+1","3.24.0+dfsg-1","3.24.0+dfsg-2","3.24.1+dfsg-1","3.24.2+dfsg-1","3.24.2+dfsg-1~bpo13+1","3.25.0+dfsg-1","3.25.0+dfsg-2","3.25.0+dfsg-3","3.25.0+dfsg-4","3.25.0+dfsg-5","3.26.0+dfsg-1","3.26.0+dfsg-1~bpo13+1","3.27.0+dfsg-1","3.27.1+dfsg-1","3.28.0+dfsg-1","3.28.0+dfsg-2","3.29.0+dfsg-1","3.30.0+dfsg-1~bpo13+1"]},{"source":"osv","ecosystem":"Red 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VE-2026-67290","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67290","tags":["advisory"]},{"url":"https://github.com/FreeRDP/FreeRDP/commit/8d3b86022f0d71aefa7bd2e466d2d391693a41b3","tags":["article"]},{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-whq8-c3v3-p8v8","tags":["article"]},{"url":"https://www.vulncheck.com/advisories/freerdp-before-heap-out-of-bounds-read-via-tsmf","tags":["article"]},{"url":"https://errata.rockylinux.org/RLSA-2026:61378","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-73241","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-73241","title":"FreeRDP: RDSTLS server authentication bypass: a credential-less Capabilities PDU is accepted at the auth step (fail-open `resultCode`)","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.","status":"published","published":"2026-08-11T19:47:27.859Z","modified":"2026-08-13T14:51:02.29Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T13:43:22.599321Z"}],"euvd":[{"id":"EUVD-2026-56934","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.","status":"published","published":"2026-08-11T19:47:27Z","modified":"2026-08-13T14:51:02Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T18:01:56.415282Z"}],"nvd":[{"id":"CVE-2026-73241","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.","status":"published","published":"2026-08-11T20:18:49.117Z","modified":"2026-09-25T15:14:39.987Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:36.880938Z"}],"osv":[{"id":"CVE-2026-72746","title":"FreeRDP before 3.30.0 RDSTLS Server Authentication Bypass via PDU-type Confusion","description":"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.","status":"published","published":"2026-08-11T12:17:00.687Z","modified":"2026-08-14T03:51:41.28553072Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:45:15.88521Z"},{"id":"CVE-2026-73241","title":"FreeRDP: RDSTLS server authentication bypass: a credential-less Capabilities PDU is accepted at the auth step (fail-open `resultCode`)","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.","status":"published","published":"2026-08-11T19:47:27.859Z","modified":"2026-10-28T11:12:14.064655742Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:45:16.365946Z"},{"id":"DEBIAN-CVE-2026-73241","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.","status":"published","published":"2026-08-11T20:18:49.117Z","modified":"2026-09-26T09:00:31.332880033Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:46:02.499355Z"},{"id":"RHSA-2026:61378","title":"Red Hat Security Advisory: freerdp security update","status":"published","published":"2026-09-01T10:28:23Z","modified":"2026-09-30T10:14:00Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:21.91255Z"},{"id":"RHSA-2026:68706","title":"Red Hat Security Advisory: freerdp security update","status":"published","published":"2026-09-18T10:15:35Z","modified":"2026-09-30T10:16:17Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:22.406388Z"},{"id":"RLSA-2026:61378","title":"Important: freerdp security update","description":"FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.\n\nSecurity Fix(es):\n\n* FreeRDP: FreeRDP: Resource exhaustion due to oversized chunked HTTP responses (CVE-2026-67297)\n\n* FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders (CVE-2026-67301)\n\n* FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests (CVE-2026-67288)\n\n* FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read (CVE-2026-67291)\n\n* FreeRDP: FreeRDP: Denial of Service due to RDPEI message processing (CVE-2026-67296)\n\n* FreeRDP: FreeRDP: Denial of Service via null pointer dereference in smartcard cleanup (CVE-2026-67304)\n\n* FreeRDP: FreeRDP: Denial of Service via integer underflow in RAIL channel handling (CVE-2026-67298)\n\n* FreeRDP: FreeRDP: Out-of-bounds memory access in Kerberos decryption (CVE-2026-73242)\n\n* FreeRDP: FreeRDP: Authentication bypass via incorrect RDSTLS PDU handling (CVE-2026-73241)\n\n* FreeRDP: FreeRDP: Denial of Service and heap corruption via malformed RDP audio PDU (CVE-2026-63652)\n\n* FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response (CVE-2026-55194)\n\n* freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in Opus audio decode (CVE-2026-63633)\n\n* FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service and information disclosure (CVE-2026-69159)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2026-09-01T12:09:07.14364Z","modified":"2026-09-01T12:30:02.534855985Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:26.111232Z"},{"id":"UBUNTU-CVE-2026-73241","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.","status":"published","published":"2026-08-11T20:18:00Z","modified":"2026-09-28T11:30:41.780423572Z","cvss":[{"version":"4.0","score":8.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T16:57:08.628462Z"},{"id":"ALSA-2026:61378","title":"Important: freerdp security update","description":"FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. The xfreerdp client can connect to RDP servers such as Microsoft Windows machines, xrdp, and VirtualBox.  \n\nSecurity Fix(es):  \n\n  * FreeRDP: FreeRDP: Resource exhaustion due to oversized chunked HTTP responses (CVE-2026-67297)\n  * FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders (CVE-2026-67301)\n  * FreeRDP: FreeRDP: Denial of Service via crafted smartcard cache requests (CVE-2026-67288)\n  * FreeRDP: FreeRDP: Denial of Service via heap out-of-bounds read (CVE-2026-67291)\n  * FreeRDP: FreeRDP: Denial of Service due to RDPEI message processing (CVE-2026-67296)\n  * FreeRDP: FreeRDP: Denial of Service via null pointer dereference in smartcard cleanup (CVE-2026-67304)\n  * FreeRDP: FreeRDP: Denial of Service via integer underflow in RAIL channel handling (CVE-2026-67298)\n  * FreeRDP: FreeRDP: Out-of-bounds memory access in Kerberos decryption (CVE-2026-73242)\n  * FreeRDP: FreeRDP: Authentication bypass via incorrect RDSTLS PDU handling (CVE-2026-73241)\n  * FreeRDP: FreeRDP: Denial of Service and heap corruption via malformed RDP audio PDU (CVE-2026-63652)\n  * FreeRDP: FreeRDP: Heap-buffer-overflow allows arbitrary code execution via crafted RPC response (CVE-2026-55194)\n  * freerdp: FreeRDP: Arbitrary code execution via heap buffer overflow in Opus audio decode (CVE-2026-63633)\n  * FreeRDP: FreeRDP: Out-of-bounds read leads to denial of service and information disclosure (CVE-2026-69159)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2026-08-31T00:00:00Z","modified":"2026-10-29T11:30:48.596839661Z","updated_at":"2026-11-02T15:27:54.753319Z"}]}}