CVE-2026-71254

9.8 Critique

Publiée le 05/08/2026 à 14:18 · Modifiée le 23/10/2026 à 23:10 · Analyse NVD reportée · Source : 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c

Description

nanoMODBUS through v1.23.0 contains an out-of-bounds write in the Modbus server-side handle_read_file_record function (FC 0x14, Read File Record) in nanomodbus.c. The function validates that the total request size does not exceed 245 bytes and that each sub-request's record_length is at most 124, but it never validates the CUMULATIVE response size across all sub-requests before processing them.

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Produits concernés

debevv nanoMODBUS

Scores CVSS

Version	Score	Source	Vecteur
3.1	9.8 Critique	309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Faiblesses (CWE)

CWE-787

Références

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

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories