CVE-2011-4860: Schneider Electric Quantum Ethernet Module 140noe77100

High severity, CVSS 10.0. EPSS: 2.6% chance of exploitation in the next 30 days.

The ComputePassword function in the Schneider Electric Quantum Ethernet Module on the NOE 771 device (aka the Quantum 140NOE771* module) generates the password for the fwupgrade account by performing a calculation on the MAC address, which makes it easier for remote attackers to obtain access via a (1) ARP request message or (2) Neighbor Solicitation message.

Affected products

• Schneider Electric Quantum Ethernet Module 140noe77100: up to and including 3.3; up to and including 3.4
• Schneider Electric Quantum Ethernet Module 140noe77101: up to and including 4.9
• Schneider Electric Quantum Ethernet Module 140noe77111: up to and including 5.0

Published 2011-12-17. Last modified 2026-06-16.