Is CVE-2026-111880 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-111880?

CVE-2026-111880 has a CVSS v3 severity of HIGH (7.4).

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CVE-2026-111880

Description

FreeRDP versions from 2.0.0 before 3.32.0 contain a heap out-of-bounds write in the server hash-callback NTLM path that fails to validate the MIC offset. Unauthenticated attackers can send a crafted AUTHENTICATE_MESSAGE with a backward session-key offset and MIC offset to write 16 zero bytes beyond the allocation.