Is CVE-2026-121398 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-121398?

CVE-2026-121398 has a CVSS v3 severity of MEDIUM (5.9).

What does CVE-2026-121398 affect?

CVE-2026-121398 affects freerdp.

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CVE-2026-121398

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Description

FreeRDP before 3.32.2 contains a cross-thread use-after-free vulnerability in the freerdp-proxy dyn-channel-dump module during session teardown. A malicious RDP target can send dynamic channel data while the front client disconnects, letting the client thread read freed ChannelData and crash the proxy process.