Medium severity4.3NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026

CVE-2026-121405

Description

FreeRDP before 3.32.2 fails to cap the OutputBufferLength in serial device-control IRP requests, allowing malicious servers to trigger excessive memory allocation. Attackers running a server with serial redirection can send an IRP_MJ_DEVICE_CONTROL request with IOCTL_USBPRINT_GET_1284_ID and a near-maximum length to exhaust client memory.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Freerdp/Freerdpllm-fuzzy
Range: <3.32.2

Patches

Vulnerability mechanics

References

github.com/FreeRDP/FreeRDP/security/advisories/GHSA-r387-jjq3-87hvnvdVendor Advisory
www.vulncheck.com/advisories/freerdp-before-3.32.2-memory-exhaustion-via-serial-rdpdr-device-controlnvdThird Party Advisory

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cvss	0.280
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000