CVE-2026-91964 FreeRDP - Buffer Overflow

FreeRDP < 3.31.0 contains a heap-based buffer overflow caused by improper validation of LoadBalanceInfo fields in Server Redirection PDU messages, letting malicious RDP servers cause client crashes or potential code execution, exploit requires malicious server.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.56% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Buffer Overflow
Impact
Denial Of Service, Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
15 September 2026
Updated
15 October 2026
Weakness
CWE-122

Vendor fix

Upgrade to version 3.31.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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