Low severity3.1NVD Advisory· Published Oct 12, 2026

CVE-2026-109240

Description

FreeRDP 3.11.0 before 3.32.1 contains a reachable assertion vulnerability in urb_isoch_transfer that allows malicious RDP servers to crash clients by sending unvalidated OutputBufferSize values. Attackers can send a TS_URB_ISOCH_TRANSFER IN-direction request with OutputBufferSize above INT32_MAX over URBDRC, triggering an assertion in libusb_udev_isoch_transfer that terminates the client.

Affected products

Freerdp/Freerdpllm-fuzzy
Range: <3.32.1

Patches

Vulnerability mechanics

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2nvd
www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-via-urb-isoch-transfernvd

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cvss	0.202
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000