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CVE-2026-91964

HIGH CVSS: 8.8 Published: 2026-09-15 Modified: 2026-09-16

Description

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.

Affected Platforms

Unknown

Weakness Type

CWE-122

References