Issues

• nanoMODBUS v1.23.0 contains three memory-safety vulnerabilities in FC 0x15 and FC 0x2B/0x0E response parsing and in extended Read Device Identification

  debevv/nanoMODBUS#135 · Filter by author Synmac05 opened on Oct 17, 2026

• Unauthenticated OOB reads in Write Multiple Registers (FC 0x10) and Write File Record (FC 0x15) servers — nanoMODBUS @ 91d6782 (CWE-125)

  debevv/nanoMODBUS#133 · Filter by author alosafuzz opened on Oct 15, 2026
  2

• Typo in doc comment for nmbs_server_create

  debevv/nanoMODBUS#131 · Filter by author jacobq opened on Sep 10, 2026

• CAN you add all the Modbus Function codes in your nanomodbus library?

  debevv/nanoMODBUS#129 · Filter by author leoembeddeder opened on Aug 13, 2026

• Unauthenticated Read File Record (FC 0x14) OOB write → control-flow hijack — nanoMODBUS @ 91d6782

  debevv/nanoMODBUS#128 · Filter by author entropy1337 opened on Aug 8, 2026

• Should a FC 43/14 server response with all requested objects from 0 inclusive even if regular or extended requested?

  debevv/nanoMODBUS#126 · Filter by author dvarkin-ru opened on Aug 4, 2026

• Bug in the fce recv_read_registers_res

  debevv/nanoMODBUS#125 · Filter by author berosh78 opened on Jul 25, 2026
  1

• Can you help me integrate your nanoMODBUS library On STM32F767 board?

  debevv/nanoMODBUS#124 · Filter by author leoembeddeder opened on Jul 18, 2026
  1

• Unauthenticated heap/stack OOB write in nanomodbus FC 0x14 (Read File Record) server → control-flow hijack

  debevv/nanoMODBUS#122 · Filter by author entropy1337 opened on Jul 12, 2026
  1

• can you add server_read_discrete_inputs and server_read_input_registers ,this 2 function in your port RTU example?

  debevv/nanoMODBUS#121 · Filter by author leoembeddeder opened on Jul 8, 2026
  2

• Security: Stack Buffer Overflow in handle_read_file_record (FC 0x14) — potential RCE on embedded targets

  debevv/nanoMODBUS#120 · Filter by author wang70880 opened on Jun 29, 2026
  4

• Is there a way to read serial port data in a non-blocking manner?

  debevv/nanoMODBUS#119 · Filter by author UPlaoren opened on Jun 8, 2026
  2

• Off-by-one heap/stack write in recv_msg_header() — length=255 writes past buf[260] into adjacent buf_idx (CWE-193)

  debevv/nanoMODBUS#118 · Filter by author TuranSecurityCNA opened on May 25, 2026

• How to work with multiple servers

  debevv/nanoMODBUS#117 · Filter by author focussing opened on May 4, 2026
  5

• What is the intended error code of nmbs_server_poll when a message should be ignored?

  debevv/nanoMODBUS#115 · Filter by author jhird-fraser opened on Apr 1, 2026

• fix clang-tidy warnings

  debevv/nanoMODBUS#111 · Filter by author mrnoise-ko opened on Jan 14, 2026
  3

• STM32 DMA badly need working example

  debevv/nanoMODBUS#110 · Filter by author mati294 opened on Jan 7, 2026
  3

• Compile/Linker options required for using static library and FetchContent

  debevv/nanoMODBUS#100 · Filter by author jhird-fraser opened on Jul 31, 2025
  3

• Timeout when receiving modbus data

  debevv/nanoMODBUS#92 · Filter by author octarudin opened on May 29, 2025
  1

• cannot have ModbusRTU (serial) working in linux

  debevv/nanoMODBUS#75 · Filter by author arkypita opened on Dec 6, 2024
  2

• Potential NMBS_ERROR_INVALID_ARGUMENT when calling nmbs_create()

  announcement
  debevv/nanoMODBUS#65 · Filter by author debevv opened on Sep 20, 2024

• Timeout Issue

  debevv/nanoMODBUS#51 · Filter by author sowmyam123 opened on May 17, 2024
  2

• Hardfault in library (Guessing Memory address fault)

  debevv/nanoMODBUS#47 · Filter by author greenscreenflicker opened on Apr 9, 2024
  3

• Add writing of registers in float/string format

  enhancement
  debevv/nanoMODBUS#2 · Filter by author debevv opened on Jan 24, 2022