Is CVE-2011-4860 actively exploited?

No active exploitation of CVE-2011-4860 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2011-4860 be exploited remotely?

Yes. CVE-2011-4860 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2011-4860?

CVE-2011-4860 has a CVSS score of 10.0 (CRITICAL).

HOME VULNERABILITIESCVE-2011-4860

CRITICAL

CVE-2011-4860

CWE-287Published: December 17, 2011· Updated: Jun 16, 2026

10.0

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2011-4860 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.