CVE-2011-4861

Name: CVE-2011-4861
Creator: NVD / NIST
Published: 2011-12-17T11:55:12.37+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.21%

Last modified Jun 16, 2026

CVE-2011-4861 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.21% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.21%

86.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-264

Affected Software

Vendor	Product	Versions
Schneider-Electric	Quantum Ethernet Module 140noe77100	<= 3.3
Schneider-Electric	Quantum Ethernet Module 140noe77100	<= 3.4
Schneider-Electric	Quantum Ethernet Module 140noe77101	<= 4.9
Schneider-Electric	Quantum Ethernet Module 140noe77111	<= 5.0

References

Timeline

Published: Dec 17, 2011
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-4861?

How severe is CVE-2011-4861?

Severity scoring for CVE-2011-4861 is pending analysis. The EPSS model estimates a 3.21% probability of exploitation in the next 30 days.

How do I fix CVE-2011-4861?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-4861?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST