CVE-2026-121962
FreeRDP before 3.32.2 Heap Buffer Overflow via Early User Authorization Read
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-787 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Nov 4, 2026 |
| Last Updated | Nov 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Affected Versions
FreeRDP / FreeRDP
0 < 3.32.2
References
Credits
Kushalkhemka mayank-jangid-moon opensec-intelligence