Low 3.1Published Oct 12, 2026

CVE-2026-109240FreeRDP 3.11.0 before 3.32.1 Reachable Assertion DoS via urb_isoch_transfer

Updated under an hour ago (2026-10-19 08:23 UTC)

Does this affect you?

It affects FreeRDP. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for FreeRDP

Exploited in the last 30 days

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.

CVSS: 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-617
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Awaiting Analysis
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 12, 2026

Affected products

Affected products

FreeRDP FreeRDP freerdp:freerdp (from the name)	from 3.11.0 before 3.32.1; 3.32.1 not affected	CNA record

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2vendor-advisory
https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-via-urb-isoch-transferthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.