CVE-2026-22857 PUBLISHED

FreeRDP has a heap-use-after-free in irp_thread_func

Assigner: GitHub_M
Reserved: 12.01.2026 Published: 14.01.2026 Updated: 26.02.2026

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.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
CVSS Score: 6.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	High	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	Passive

CVSS 4.0

Product Status

Vendor	FreeRDP
Product	FreeRDP
Versions	Version < 3.20.1 is affected

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-4gxq-jhq6-4cr8
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1

Problem Types

CWE-416: Use After Free CWE