CVE-2011-4861

critical

Description

The modbus_125_handler function in the Schneider Electric Quantum Ethernet Module on the NOE 771 device (aka the Quantum 140NOE771* module) allows remote attackers to install arbitrary firmware updates via a MODBUS 125 function code to TCP port 502.

References

https://euvd.enisa.europa.eu/vulnerability/EUVD-2011-4778

http://reversemode.com/index.php?option=com_content&task=view&id=80&Itemid=1

Details

Source: Mitre, NVD

Published: 2011-12-17

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H