CVE-2026-91964
HIGH
MEDIUM
Priority: 0.05
BB Relevance:
68/100
Published: 2026-09-15
Modified: 2026-11-03
First seen: 2026-11-03
Status: active
Attack Surface
Network
Low Complexity
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
Passive
S:
X
AT:
None
VC:
High
VI:
High
VA:
High
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.
Weakness Classification (1)
References & Advisories (2)
Third Party Advisory
Exploit
Vendor Advisory