Detections
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CVE-2026-22855

medium

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap out-of-bounds read occurs in the smartcard SetAttrib path when cbAttrLen does not match the actual NDR buffer length. This vulnerability is fixed in 3.20.1.

References

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-22855.json

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-rwp3-g84r-6mx9

https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1

https://bugzilla.redhat.com/show_bug.cgi?id=2429645

https://access.redhat.com/security/cve/CVE-2026-22855

https://access.redhat.com/errata/RHSA-2026:4489

https://access.redhat.com/errata/RHSA-2026:4471

https://access.redhat.com/errata/RHSA-2026:4446

https://access.redhat.com/errata/RHSA-2026:4440

https://access.redhat.com/errata/RHSA-2026:4439

https://access.redhat.com/errata/RHSA-2026:4438

https://access.redhat.com/errata/RHSA-2026:4437

https://access.redhat.com/errata/RHSA-2026:4121

https://access.redhat.com/errata/RHSA-2026:3975

https://access.redhat.com/errata/RHSA-2026:3334

https://access.redhat.com/errata/RHSA-2026:3068

https://access.redhat.com/errata/RHSA-2026:3067

https://access.redhat.com/errata/RHSA-2026:19033

Details

Source: Mitre, NVD

Published: 2026-01-14

Updated: 2026-06-30

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Severity: Critical

CVSS v4

Base Score: 6.1

Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00042