CVE-2026-22856

HIGH
2026-01-14 [email protected]
8.1
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

4
Patch Released
Apr 09, 2026 - 20:30 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Jan 20, 2026 - 18:35 vuln.today
Public exploit code
CVE Published
Jan 14, 2026 - 18:16 nvd
HIGH 8.1

Tags

Race Condition Freerdp Redhat Suse

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a race in the serial channel IRP thread tracking allows a heap use‑after‑free when one thread removes an entry from serial->IrpThreads while another reads it. This vulnerability is fixed in 3.20.1.

Analysis

Heap use-after-free in FreeRDP versions before 3.20.1 stems from unsynchronized access to serial channel thread tracking structures, allowing remote attackers to trigger memory corruption and achieve code execution. The vulnerability affects systems using vulnerable FreeRDP versions for remote desktop connections and has public exploit code available. …

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Remediation

Within 7 days: Identify all affected systems and apply vendor patches promptly. Monitor vendor channels for patch availability.

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Priority Score

61
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +40
POC: +20

Vendor Status

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CVE-2026-22856 vulnerability details – vuln.today
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