CVE-2026-73241

Source
https://cve.org/CVERecord?id=CVE-2026-73241
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73241.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-73241
Aliases
Downstream
Published
2026-08-11T19:47:27.859Z
Modified
2026-08-15T16:52:33.274905Z
Severity
  • 8.3 (High) CVSS_V4 - 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 CVSS Calculator
Summary
FreeRDP: RDSTLS server authentication bypass: a credential-less Capabilities PDU is accepted at the auth step (fail-open `resultCode`)
Details

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 RDSTLSTYPECAPABILITIES PDU while rdstlsserverauthenticate is waiting for RDSTLSTYPEAUTHREQ, leaving resultCode at RDSTLSRESULTSUCCESS and allowing a remote unauthenticated client to bypass the RedirectionGuid, username, domain, or password checks. This issue is fixed in version 3.30.0.

Database specific
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/73xxx/CVE-2026-73241.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-287"
    ]
}
References

Affected packages

Git / github.com/freerdp/freerdp

Affected ranges

Type
GIT
Repo
https://github.com/freerdp/freerdp
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
Fixed
Database specific
Show details
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.30.0"
        }
    ]
}

Affected versions

1.*
1.0-beta1
1.0-beta2
1.0-beta4
1.0-beta5
1.0.0
1.0.1
1.1.0-beta+2013071101
1.1.0-beta1
1.1.0-beta1+android2
1.1.0-beta1+android3
1.1.0-beta1+android4
1.1.0-beta1+android5
1.1.0-beta1+ios1
1.1.0-beta1+ios2
1.1.0-beta1+ios3
1.1.0-beta1+ios4
1.2.0-beta1+android7
1.2.0-beta1+android9
2.*
2.0.0
2.0.0-beta1+android10
2.0.0-beta1+android11
2.0.0-rc0
2.0.0-rc1
2.0.0-rc2
2.0.0-rc3
2.0.0-rc4
3.*
3.0.0
3.0.0-beta1
3.0.0-beta2
3.0.0-beta3
3.0.0-beta4
3.0.0-rc0
3.1.0
3.2.0
3.3.0
3.4.0
3.5.0
3.5.1

Database specific

vanir_signatures
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        "target": {
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                "260098362017696852684436370394853622013"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-73241-cd10d833",
        "target": {
            "file": "libfreerdp/core/rdstls.c"
        },
        "source": "https://github.com/freerdp/freerdp/commit/b05a9510787c83c87ffc5fa8d7cc9f06ed971695",
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "digest": {
            "length": 499.0,
            "function_hash": "61484004935694442737948472813653789411"
        },
        "id": "CVE-2026-73241-d005b8bc",
        "target": {
            "function": "rdstls_recv_authentication_response",
            "file": "libfreerdp/core/rdstls.c"
        },
        "source": "https://github.com/freerdp/freerdp/commit/b05a9510787c83c87ffc5fa8d7cc9f06ed971695",
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "digest": {
            "length": 170.0,
            "function_hash": "273666884238746818107833787441566006597"
        },
        "id": "CVE-2026-73241-e5248ef7",
        "target": {
            "function": "rdstls_process_authentication_request_with_cookie",
            "file": "libfreerdp/core/rdstls.c"
        },
        "source": "https://github.com/freerdp/freerdp/commit/b05a9510787c83c87ffc5fa8d7cc9f06ed971695",
        "signature_version": "v1"
    },
    {
        "signature_type": "Function",
        "deprecated": false,
        "digest": {
            "length": 380.0,
            "function_hash": "141704580816610505551292455720888532250"
        },
        "id": "CVE-2026-73241-ecf0dcbb",
        "target": {
            "function": "rdstls_send_authentication_response",
            "file": "libfreerdp/core/rdstls.c"
        },
        "source": "https://github.com/freerdp/freerdp/commit/b05a9510787c83c87ffc5fa8d7cc9f06ed971695",
        "signature_version": "v1"
    }
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-73241.json"
vanir_signatures_modified
"2026-08-15T16:52:33Z"