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CVE-2026-56297

FreeRDP - Use-After-Free via Race Condition in DRDYNVC Channel Callback PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
FreeRDP / FreeRDPaffected 0 before 3.22.0; unaffected 3.22.0

CWE

CWE-362

References

ADP enrichment

CISA-ADP

No English description supplied.