Is CVE-2026-121387 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-121387?

CVE-2026-121387 has a CVSS v3 severity of MEDIUM (4.3).

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CVE-2026-121387

Description

FreeRDP 2.0.0 before 3.32.2 contains an out-of-bounds read vulnerability in freerdp_dsp_decode_gsm610 that allows malicious RDP servers to read past audio buffers by sending truncated GSM610 frames. Attackers can negotiate GSM610 on rdpsnd and send a WAVE2 message shorter than a 33- or 32-byte WAV49 frame to crash the client.