HIGHVulnerability
CVE-2026-71255
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.
Properties
- severity
- HIGH
- score
- 8.6
- cve_id
- CVE-2026-71255
- vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
- published_at
- 2026-08-05T12:18:57.727
- last_modified
- 2026-08-26T17:13:24.800
Related Entities (2)
HAS_WEAKNESS (1)
→[Weakness]Out-of-bounds Write
DESCRIBED_BY (1)
→[Source]NVD
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