CVE-2026-71255 (GCVE-0-2026-71255)

Vulnerability from cvelistv5 – Published: 2026-08-05 11:44 – Updated: 2026-08-10 11:46
VLAI
Title
nanoMODBUS Client-Side Out-of-Bounds Write via object_length in recv_read_device_identification_res()
Summary
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.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 12:28 UTC
CWE
Assigner
TuranSec CNA under the mitre root
CNA scorecard C 70/100 over 189 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
debevv nanoMODBUS Affected: 0 , ≤ 1.23.0 (semver)
guessed Create a notification for this product.
Date Public
2026-08-05 11:44
Credits
Shukhratbek Uraiimov
Show details on NVD website
To clipboard 

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