CVE-2026-91947 [HIGH] – FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNV

FreeRDP server versions before 3.31.0 contain a use-after-free vulnerability in the DRDYNVC parser that dereferences a channel pointer after releasing the synchronization lock. Authenticated clients can race AUDIN channel closure messages against DRDYNVC data parsing to trigger heap-use-after-free when accessing freed channel objects.