{"id":"CVE-2026-121400","title":"FreeRDP before 3.32.2 CPU Exhaustion via RDG Control Packet","summary":"FreeRDP before 3.32.2 contains a denial-of-service vulnerability in rdg_process_control_packet that allows a malicious RD Gateway to exhaust client CPU by sending an incomplete keepalive control packet. Attackers completing the RDG tunne…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-835"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP < 3.32.2"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T17:51:54.414654Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T18:31:06.684Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121400","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-x4x6-2hrm-hvq9","label":"GitHub Security Advisory (GHSA-x4x6-2hrm-hvq9)"},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.2-cpu-exhaustion-via-rdg-control-packet","label":"VulnCheck Advisory: FreeRDP before 3.32.2 CPU Exhaustion via RDG Control Packet"}],"tags":["cve.org"],"epss":0.0031,"epssPercentile":0.24034,"ingestedAt":"2026-11-05T20:33:06.359Z","slug":"CVE-2026-121400","body":"## Overview\n\nFreeRDP before 3.32.2 contains a denial-of-service vulnerability in rdg_process_control_packet that allows a malicious RD Gateway to exhaust client CPU by sending an incomplete keepalive control packet. Attackers completing the RDG tunnel-open exchange then send an eight-byte header with packetLength 0xFFFF and withhold the body, causing an unbounded no-progress read loop that spins one client thread at full CPU.\n\n## Affected\n\n- `FreeRDP < 3.32.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}