CVE-2026-71255
High · 8.6CVSS
8.6
EPSS
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Published
Aug 5, 2026
CISA due date
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The record
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.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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