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{"bugzilla": {"description": "FreeRDP: FreeRDP: Denial of Service via out-of-bounds write in urbdrc client channel", "id": "2533928", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2533928"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["A flaw was found in FreeRDP. A malicious Remote Desktop Protocol (RDP) server can send a specially crafted USB redirection message to the urbdrc client channel. This can trigger an out-of-bounds write, leading to a denial of service (DoS) for the client when verbose asserts are enabled."], "mitigation": {"lang": "en:us", "value": "To mitigate this issue, disable the USB redirection (urbdrc) client channel when connecting to untrusted RDP servers. This can typically be achieved by using the `/d:urbdrc` option with `xfreerdp` or similar FreeRDP client commands. Disabling this channel will prevent USB device redirection functionality."}, "name": "CVE-2026-91951", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "freerdp", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-09-15T15:18:08Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-91951\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-91951\nhttps://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h5w2-q35j-443h\nhttps://www.vulncheck.com/advisories/freerdp-3.14.0-through-3.30.0-out-of-bounds-write-via-urbdrc"], "threat_severity": "Moderate"}

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