{"id":"CVE-2026-109952","revision":"f3c3c535017a45339d328d971587d62e","records":[{"revision":"f3c3c535017a45339d328d971587d62e","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-109952","aliases":[],"title":"FreeRDP 3.0.0 before 3.32.0 Security Protocol Downgrade via Negotiation Response","description":"The FreeRDP client 3.0.0 before 3.32.0 does not check a server-selected PROTOCOL_RDSTLS or PROTOCOL_HYBRID_EX against its enabled protocol set in nego_process_negotiation_response(), allowing a security protocol downgrade. A malicious server or man-in-the-middle can select RDSTLS to override /sec:nla pinning, complete authentication with an all-zero cookie, and receive the user's cleartext password in the Client Info PDU.","state":0,"publishedAt":"2026-10-13T13:27:17.758+00:00","modifiedAt":"2026-10-16T21:49:38.61+00:00","affected":[{"ecosystem":"Vendor product","name":"FreeRDP","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FreeRDP\",\n                    \"product\": \"FreeRDP\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0.0\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\",\n                            \"lessThan\": \"3.32.0\"\n                        },\n                        {\n                            \"version\": \"3.32.0\",\n                            \"status\": \"unaffected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","score":6,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","score":5.3,"severity":"MEDIUM"}],"references":["https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qq23-mqmv-pc65","https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.0-security-protocol-downgrade-via-negotiation-response"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-109952","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-109952","identifiers":["CVE-2026-109952"]},"retained":false,"historicalAffected":[]}],"coverage":[]}