CVE-2026-109240
lowFreeRDP 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 u…
Vendor / product: Freerdp — freerdp
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
3.1 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-12 17:17
Modified: 2026-11-03 21:33
NVD status: Analyzed
Last synced 1 day ago
Verified against the source API 2026-11-03 21:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
freerdp / freerdp ≥3.11.0 <3.32.1
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.1-reachable-assertion-dos-... disclosure@vulncheck.com
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9qqc-m43j-g4r2 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 21:53 UTC · record ↗