CVE-2026-56297 — FreeRDP - Use-After-Free via Race Condition in DRDYNVC Channel Callback
FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A ma…
Published: 2026-07-08 · CVSS: 8.3 · CVSS 4.0
FreeRDP before 3.22.0 contains a use-after-free vulnerability in dvcman_channel_close and dvcman_call_on_receive due to improper synchronization of channel_callback access. A malicious RDP server can trigger a race condition by sending DYNVC_DATA and DYNVC_CLOSE messages concurrently, causing heap-use-after-free in the drdynvc client thread and potentially enabling remote code execution or denial of service.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7