What’s Vulnerable › Vulnerabilities

CVE-2026-22859: FreeRDP has a heap-buffer-overflow in urb_select_configuration

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-14 · updated 2026-07-15
• Weakness: 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.

Affected products

• FreeRDP: before 3.20.1 — fixed in 3.20.1

How to fix

Upgrade to a fixed version: FreeRDP 3.20.1. Check the vendor advisory for mitigations.

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

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