CVE-2026-22859
Critical · CVSS 9.1FreeRDP — Out-of-bounds read via unchecked server-supplied array index (CWE-125, CWE-129)
- CVSS
- 9.1
- nvd
- EPSS
- —
- KEV
- No
- Class
- oss containerizable
- CWE-125, CWE-129, CWE-125
Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, the URBDRC client does not perform bounds checking on server‑supplied MSUSB_INTERFACE_DESCRIPTOR values and uses them as indices in libusb_udev_complete_msconfig_setup, causing an out‑of‑bounds read. This vulnerability is fixed in 3.20.1.
Search profile — drives PoC discovery
Symbols URBDRCMSUSB_INTERFACE_DESCRIPTORlibusb_udev_complete_msconfig_setupurbdrc_clientGHSA-56f5-76qv-2r36
Keywords CVE-2026-22859FreeRDPURBDRCMSUSB_INTERFACE_DESCRIPTORout-of-bounds readlibusb_udev_complete_msconfig_setupbounds checkingFreeRDP 3.20.1GHSA-56f5-76qv-2r36
Versions: < 3.20.1
Ranked PoCs (1) — best first
Heuristic ranking — not yet expert-vetted. Scored on structure + provenance, not execution.
- ★ 0
Recall-favoring discovery; ranking by the Stage-4 scorer (Adam's rubric). Scanner/aggregator repos are hidden.
References
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36
- https://access.redhat.com/errata/RHSA-2026:19033
- https://access.redhat.com/errata/RHSA-2026:3067
- https://access.redhat.com/errata/RHSA-2026:3068
- https://access.redhat.com/errata/RHSA-2026:3334
- https://access.redhat.com/errata/RHSA-2026:3975
- https://access.redhat.com/errata/RHSA-2026:4121
- https://access.redhat.com/errata/RHSA-2026:4433
- https://access.redhat.com/errata/RHSA-2026:4437
- https://access.redhat.com/errata/RHSA-2026:4438
- https://access.redhat.com/errata/RHSA-2026:4439
Status: enriched · ingested 2026-06-30T06:00:22.000Z · profiled 2026-06-30T18:30:14.000Z