{"id":"CVE-2026-109240","summary":"FreeRDP 3.11.0 before 3.32.1 Reachable Assertion DoS via urb_isoch_transfer","details":"FreeRDP 3.11.0 before 3.32.1 contains a reachable assertion vulnerability in urb_isoch_transfer that allows malicious RDP servers to crash clients by sending unvalidated OutputBufferSize values. Attackers can send a TS_URB_ISOCH_TRANSFER IN-direction request with OutputBufferSize above INT32_MAX over URBDRC, triggering an assertion in libusb_udev_isoch_transfer that terminates the client.","aliases":["GHSA-9qqc-m43j-g4r2"],"modified":"2026-10-16T02:30:40.604236683Z","published":"2026-10-12T16:04:17.023Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-617"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109240.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109240.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109240"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-via-urb-isoch-transfer"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"4312666c8f89cb5464fc6e79423d1d7e33683ebe"},{"fixed":"bf217a504e54cc719880c228e82353382cd7d4fa"}],"database_specific":{"extracted_events":[{"introduced":"3.11.0"},{"fixed":"3.32.1"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109240.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"}]}