Vulnerability DatabaseCVE-2026-121398
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CVE-2026-121398
Published:November 03, 2026
Updated:November 04, 2026
FreeRDP before 3.32.2 contains a cross-thread use-after-free vulnerability in the freerdp-proxy dyn-channel-dump module during session teardown. A malicious RDP target can send dynamic channel data while the front client disconnects, letting the client thread read freed ChannelData and crash the proxy process.
Affected Packages
https://github.com/FreeRDP/FreeRDP.git (GITHUB):
Affected version(s) >=3.0.0-beta1 <3.32.2
Fix Suggestion:
Update to version 3.32.2
Related Resources (4)
https://www.vulncheck.com/advisories/freerdp-before-3.32.2-use-after-free-via-dyn-channel-dump-module
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121398.json
https://nvd.nist.gov/vuln/detail/CVE-2026-121398
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-v3q2-qjvf-7rqw
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CVSS v4
Base Score:
8.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.9
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Use After Free
CWE-416