CVE-2026-121964
FreeRDP before 3.32.2 Heap Buffer Overflow via rpc_client_recv_fragment
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
FreeRDP before 3.32.2 contains a heap-based buffer overflow in the RD Gateway RPC client, where rpc_client_recv_fragment writes BIND_ACK and ALTER_CONTEXT_RESP fragments into a persistent PDU stream after checking only total capacity rather than remaining capacity from the current stream position. A malicious or compromised RD Gateway can send crafted RPC fragments with manipulated alloc_hint and frag_length values to overwrite client heap memory with attacker-controlled data, causing a crash or potentially arbitrary code execution.
| CWE | CWE-122 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Nov 4, 2026 |
| Last Updated | Nov 4, 2026 |
Stay Ahead of the Next One
Get instant alerts for freerdp freerdp
Be the first to know when new high vulnerabilities affecting freerdp freerdp are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
FreeRDP / FreeRDP
0 < 3.32.2
References
Credits
smaeljaish771 KeenSecurityLab