Vulnerability DatabaseCVE-2026-110838
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CVE-2026-110838
Published:October 14, 2026
Updated:October 16, 2026
FreeRDP shadow server from 3.0.0 before 3.32.0 dispatches input PDUs during the Confirm Active state before authentication, allowing unauthenticated attackers to inject keyboard input. Attackers can negotiate TLS-only RDP and send an input PDU without Confirm Active to inject synthetic keystrokes into the host user's X11 session via XTEST.
Affected Packages
https://github.com/FreeRDP/FreeRDP.git (GITHUB):
Affected version(s) >=3.31.0 <3.32.0
Fix Suggestion:
Update to version 3.32.0
Related Resources (4)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m998-cvfm-9444
https://www.vulncheck.com/advisories/freerdp-shadow-before-3.32.0-pre-authentication-input-injection-via-confirm-active-bypass
https://nvd.nist.gov/vuln/detail/CVE-2026-110838
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110838.json
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CVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Weakness Type (CWE)
Missing Authentication for Critical Function
CWE-306
EPSS
Base Score:
0.26