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2026-01-19
FreeRDP RDPGFX ClearCodec Heap Buffer Overflow Vulnerability (CVE-2026-23533) Security Advisory
[Affected Scope] Client environments running FreeRDP versions prior to 3.21.0
[Impact] A malicious RDP server can trigger a client-side heap buffer overflow, leading to Denial of Service (DoS) or potential Remote Code Execution (RCE)
[Mitigation] Immediately upgrade FreeRDP to the patched version 3.21.0 or higher