CVE-2026-91964
FreeRDP 2.0.0 through 3.30.0 Heap Buffer Overflow via RoutingToken
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
FreeRDP versions before 3.31.0 contain a heap-based buffer overflow in nego_send_negotiation_request when processing Server Redirection PDU messages with attacker-controlled LoadBalanceInfo fields. A malicious RDP server can trigger the overflow by sending an arbitrary-length field that gets written to a fixed 512-byte buffer without validation, causing client crashes or potential code execution when chained with memory disclosure.
| CWE | CWE-122 |
| Vendor | freerdp |
| Product | freerdp |
| Published | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
FreeRDP / FreeRDP
2.0.0 < 3.0.0 3.0.0 < 3.31.0
FreeRDP / FreeRDP
0 < 3.31.0
References
Credits
🔍 iarce-qb