HIGH

CVE-2026-71255

2026-08-05 CVSS v3.1

CVSS

8.6

Description

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.

Weakness (CWE)

CWE-787 Out-of-bounds Write

EPSS Score

0.22%

Probability of exploitation in next 30 days

12.8th percentile

References

https://github.com/debevv/nanoMODBUS https://github.com/debevv/nanoMODBUS/blob/master/nanomodbus.c

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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