Is CVE-2026-56297 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-56297?

CVE-2026-56297 has a CVSS v3 severity of HIGH (7).

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CVE-2026-56297

Description

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.