CVE-2026-71255 — nanoMODBUS Client-Side Out-of-Bounds Write via object_length in recv_read_device_identification_res()
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) …
Published: 2026-08-05 · CVSS: 8.6 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7