{"id":"CVE-2026-121405","title":"FreeRDP before 3.32.2 Memory Exhaustion via Serial RDPDR Device Control","summary":"FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory allocation. Attackers running a server with serial redirection can send an IRP_MJ_DEV…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-770"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP < 3.32.2"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-03T17:13:34.520903Z"},"exploitAvailable":true,"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T17:14:10.501Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121405","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r387-jjq3-87hv","label":"GitHub Security Advisory (GHSA-r387-jjq3-87hv)"},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.2-memory-exhaustion-via-serial-rdpdr-device-control","label":"VulnCheck Advisory: FreeRDP before 3.32.2 Memory Exhaustion via Serial RDPDR Device Control"}],"tags":["cve.org","exploit-available"],"epss":0.00286,"epssPercentile":0.21287,"ingestedAt":"2026-11-05T20:33:06.320Z","slug":"CVE-2026-121405","body":"## Overview\n\nFreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory allocation. Attackers running a server with serial redirection can send an IRP_MJ_DEVICE_CONTROL request with IOCTL_USBPRINT_GET_1284_ID and a near-maximum length to exhaust client memory.\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":"twilight","depthScore":36,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}