NVD security advisoryHigh
High advisory for FreeRDP
CVE-2026-121962 · Reported 4 Nov 2026
Full advisory details, affected packages, severity context, and original source.
Affected technology
FreeRDPAffected product
Advisory overview
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.