VulnerabilityModified
CVE-2026-22859
FreeRDP is a free implementation of the Remote Desktop Protocol.
MEDIUM 5.6EPSS 0.87%
Does this matter?
Lower severity and a low EPSS score (0.87%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 5.6 MEDIUMCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.87% probability · 57th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125, CWE-129
- Affected
- freerdp/freerdp
- Source
- security-advisories@github.com
References
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1Release Notes
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-56f5-76qv-2r36Exploit, Vendor Advisory
- 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
- https://access.redhat.com/errata/RHSA-2026:4440
- https://access.redhat.com/errata/RHSA-2026:4446
- https://access.redhat.com/errata/RHSA-2026:4471
- https://access.redhat.com/errata/RHSA-2026:4489
- https://access.redhat.com/security/cve/CVE-2026-22859
- https://bugzilla.redhat.com/show_bug.cgi?id=2429653
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22859.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.