CVEvulnerability

CVE-2026-54410

7.8 HIGH Published 2026-06-14 Modified 2026-08-10 Official page ↗
Status
Deferred
Published
2026-06-14
Last modified
2026-08-10
Assigner
309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
CVSS 4.0 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
7.8 HIGH — CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:X
CVSS 3.1 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS 2.0 (309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c)
9.0 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:C
Weaknesses
CWE-193, CWE-787

Description

nanoMODBUS through v1.23.0 contains an off-by-one buffer overflow in the recv_msg_header function of the Modbus/TCP server that allows remote unauthenticated attackers to write one attacker-controlled byte past the end of the 260-byte receive buffer by sending a crafted MBAP frame whose Length field is set to 255.

Related

Weakness · CWE (2)

  • CWE-193 Off-by-one Error weakness
  • CWE-787 Out-of-bounds Write weakness

References