Vulnerability DatabaseCVE-2026-121961
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CVE-2026-121961
Published:November 04, 2026
Updated:November 05, 2026
FreeRDP before 3.32.2 contains a use-after-free vulnerability in the freerdp-proxy DRDYNVC tracker when intercepting the drdynvc channel. A malicious target server can repeatedly send CREATE_REQUEST_PDU for an active channel id, racing front DATA handling to free a borrowed context 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-drdynvc-tracker-race
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-qw7w-hhxq-763c
https://nvd.nist.gov/vuln/detail/CVE-2026-121961
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/121xxx/CVE-2026-121961.json
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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)
Concurrent Execution using Shared Resource with Improper Synchronization
CWE-362