CVE-2026-121405

MediumCVSS 4.3/10Last modified Nov 3, 2026

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.

Metrics

CVSS 3.1 4.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Weakness enumeration

CWE-770

Affected software

Vendor	Product	Versions
FreeRDP	FreeRDP	< 3.32.2

References

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

Timeline

Published: Nov 3, 2026
Last modified: Nov 3, 2026
NVD status: Modified

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