CVE-2026-22857
CRITICALFreeRDP < 3.20.1 - Use-After-Free in IRP Error Handling
Title source: llmDescription
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap use-after-free occurs in irp_thread_func because the IRP is freed by irp->Complete() and then accessed again on the error path. This vulnerability is fixed in 3.20.1.
References (2)
Core 2
Core References
Exploit, Vendor Advisory x_refsource_confirm
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4gxq-jhq6-4cr8
Release Notes x_refsource_misc
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
Scores
CVSS v3
9.8
EPSS
0.0011
EPSS Percentile
29.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-416
Status
published
Products (1)
freerdp/freerdp
< 3.20.1
Published
Jan 14, 2026
Tracked Since
Feb 18, 2026