{"id":"CVE-2026-121962","published":"2026-11-04T16:17:49.320","lastModified":"2026-11-04T19:17:37.680","description":"FreeRDP before 3.32.2 contains a heap buffer overflow in transport_default_read_pdu when handling partial Early User Authorization reads during PROTOCOL_HYBRID_EX CredSSP. A malicious RDP server can split the four-byte EUA result into short reads that advance the stream pointer beyond the 16 KiB allocation, causing an out-of-bounds write and client denial of service.","cvssScore":8.1,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H","cwes":["CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j536-qc58-pmf8","tags":[]},{"url":"https://www.vulncheck.com/advisories/freerdp-before-3.32.2-heap-buffer-overflow-via-early-user-authorization-read","tags":[]},{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j536-qc58-pmf8","tags":[]}],"exploitRefs":[{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j536-qc58-pmf8","tags":[]},{"url":"https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-j536-qc58-pmf8","tags":[]}],"hasPoc":true,"ai":null}