Threats Tagged 'cve-2026-71255'
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Threats Tagged 'cve-2026-71255'
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CVE-2026-71255: CWE-787 in debevv nanoMODBUSCVE-2026-71255 0 nanoMODBUS through v1.23.0 contains an out-of-bounds write in the Modbus client-side recv_read_device_identification_res() function (FC 0x2B/MEI 0x0E, Read Device Identification) in nanomodbus.c. The server-supplied object_length field (0-246) is validated only against the remaining PDU size (res_size_left) and is never validated against the caller-supplied buffers_length parameter. After copying data with strncpy(buffers_out[buf_index], str, buffers_length), the code unconditionally writes a NUL terminator at buffers_out[buf_index][object_length]. When a malicious or compromised Modbus server sends a response with object_length greater than or equal to the client's buffers_length, this NUL write lands past the end of the caller-provided buffer, corrupting adjacent stack or heap memory on the client. Join the discussion | CVE Database V5 | 08/05/2026, 11:44:21 UTC Added: 08/05/2026, 11:57:50 UTC |
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