{"id":"CVE-2026-91951","summary":"FreeRDP 3.14.0 through 3.30.0 Out-of-bounds Write via urbdrc","details":"FreeRDP versions before 3.31.0 contain an out-of-bounds write vulnerability in the urbdrc client channel's urb_send_current_frame_number_result() function. A malicious RDP server can send a crafted 28-byte USB redirection message to trigger a 4-byte write past the allocated 16-byte buffer, causing denial of service when verbose asserts are enabled.","aliases":["GHSA-h5w2-q35j-443h"],"modified":"2026-09-17T03:47:11.737722601Z","published":"2026-09-15T15:18:08.518Z","database_specific":{"cna_assigner":"VulnCheck","cwe_ids":["CWE-617"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91951.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91951.json"},{"type":"ADVISORY","url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h5w2-q35j-443h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91951"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/freerdp-3.14.0-through-3.30.0-out-of-bounds-write-via-urbdrc"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/freerdp/freerdp","events":[{"introduced":"cd0a17f8607ec7ed310d39aa48ac9a5caf640592"},{"fixed":"aa8650b300aa4cabd85d9c72b431301509b9043f"}],"database_specific":{"extracted_events":[{"introduced":"3.14.0"},{"fixed":"3.31.0"},{"introduced":"0"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91951.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}