{"id":"CVE-2026-121388","title":"FreeRDP 3.0.0 before 3.32.2 Uncapped Memory Allocation via DRDYNVC DATA_FIRST","summary":"FreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up…","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-770"],"vendor":"FreeRDP","product":"FreeRDP","affected":["FreeRDP >= 3.0.0 < 3.32.2"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-11-03T22:37:04.409438Z"},"published":"2026-11-03","updated":"2026-11-03","sourceUpdated":"2026-11-03T22:41:38.002Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-121388","references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rrp5-666j-g6gp","label":"GitHub Security Advisory (GHSA-rrp5-666j-g6gp)"},{"url":"https://www.vulncheck.com/advisories/freerdp-3.0.0-before-3.32.2-uncapped-memory-allocation-via-drdynvc-data-first","label":"VulnCheck Advisory: FreeRDP 3.0.0 before 3.32.2 Uncapped Memory Allocation via DRDYNVC DATA_FIRST"}],"tags":["cve.org"],"epss":0.0031,"epssPercentile":0.24033,"ingestedAt":"2026-11-05T20:33:06.606Z","slug":"CVE-2026-121388","body":"## Overview\n\nFreeRDP from 3.0.0 before 3.32.2 contains an uncontrolled resource allocation vulnerability that allows malicious RDP servers to force large client allocations through the DRDYNVC DATA_FIRST Length field. Attackers can declare lengths up to 4,294,967,295 bytes on running dynamic channels, causing StreamPool_Take to reserve memory before body validation and exhaust client memory.\n\n## Affected\n\n- `FreeRDP >= 3.0.0 < 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":[]}