CVE-2026-109240CWE-617

CVE-2026-109240

Low · published October 12, 2026

CVSS v3.1
3.1
EPSS
0%
Percentile
11.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.1 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0
2.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00219 · 11.7th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-10-12T21:17Z
References (3)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2 · [email protected]https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-via-urb-isoch-transfer · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 16:04Z
    FreeRDP 3.11.0 before 3.32.1 Reachable Assertion DoS via urb_isoch_transfer
    cvelistv5
  • 12 OCT 16:04Z
    FreeRDP 3.11.0 before 3.32.1 Reachable Assertion DoS via urb_isoch_transfer
    cvelistv5