CVE-2026-109240

LOWCVSS 3.1

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.

Timeline

Published:October 12th, 2026 5:17 PM

Last modified:October 14th, 2026 8:11 PM

CVSS Scoring

CVSS v3: 3.1 (LOW)

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

Weaknesses (CWE)

CWE-617

References & Reports

Advisories, patches, and third-party reports

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2
https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-via-urb-isoch-transfer
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2

Source: NIST NVD · Data may lag official sources by up to one minute