CVE-2026-121962
HIGH
NVD
CVSS Score
8.1
Severity
HIGH
Published
Nov 04, 2026
Vendor
unknown
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.