CVE-2026-22856

MEDIUM EPSS 20.3%
Published Jan 14, 20265mo ago · Modified Jun 17, 20261w ago
6.8 CVSS 4.0
Medium
Find Similar
Published Jan 14, 2026 5mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
6.8
Exploitability
—
Impact
—
Vector string
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction P
Scope X

Threat Intelligence

EPSS Exploit Probability
20.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 2

CWE-362
CWE-416 Use After Free Memory Safety

Affected Products 1

VendorProductVersionRange
freerdpfreerdp* <3.20.1

References 2

  • github.com https://github.com/FreeRDP/FreeRDP/releases/tag/3.20.1
    Release Notes
  • github.com https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv
    ExploitPatchVendor Advisory

Remediation

  • github.com https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-w842-c386-fxhv
    ExploitPatchVendor Advisory