CVE-2011-4861
10.0 · HIGHThe 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 upd…
Overview
CVE-2011-4861 is a high-severity vulnerability affecting schneider-electric quantum_ethernet_module_140noe77100. It was published on December 17, 2011 and has a CVSS 2.0 base score of 10.0 (HIGH).
This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from schneider-electric. Update quantum_ethernet_module_140noe77100 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| schneider-electric | quantum_ethernet_module_140noe77100 | 0 | Affected |
| schneider-electric | quantum_ethernet_module_140noe77101 | 0 | Affected |
| schneider-electric | quantum_ethernet_module_140noe77111 | 0 | Affected |
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Frequently asked questions
What is CVE-2011-4861?
CVE-2011-4861 is a high-severity vulnerability affecting schneider-electric quantum_ethernet_module_140noe77100. It was published on December 17, 2011 and has a CVSS 2.0 base score of 10.0 (HIGH).
How severe is CVE-2011-4861?
This vulnerability has a CVSS 2.0 base score of 10.0, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2011-4861?
Check the references section for vendor advisories and patches from schneider-electric. Update quantum_ethernet_module_140noe77100 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2011-4861?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4861 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.
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