Heap Use-After-Free Vulnerability in FreeRDP Remote Desktop Protocol Implementation
CVE-2026-22857

6.8MEDIUM

Key Information:

Vendor

Freerdp

Status
Freerdp
Vendor
CVE Published:
14 January 2026

What is CVE-2026-22857?

A heap use-after-free vulnerability exists in FreeRDP, affecting versions prior to 3.20.1. Specifically, this issue occurs in the irp_thread_func where an IRP is freed by irp->Complete() and subsequently accessed again on the error path. This flaw can potentially lead to unexpected behavior or exploitation of the system. Users are advised to update to version 3.20.1 or later for mitigation.

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Affected Version(s)

FreeRDP < 3.20.1

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GH...
x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
x_refsource_MISC

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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