{"cve":"CVE-2011-4861","nvd":{"published":"2011-12-17T11:55:12.370","modified":"2026-06-16T23:35:31.733","status":"Modified","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.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://reversemode.com/index.php?option=com_content&task=view&id=80&Itemid=1","http://reversemode.com/index.php?option=com_content&task=view&id=80&Itemid=1"],"products":["schneider-electric:quantum_ethernet_module_140noe77100","schneider-electric:quantum_ethernet_module_140noe77101","schneider-electric:quantum_ethernet_module_140noe77111"],"source":"nvd","synced_at":"2026-10-19T19:59:31.623151214+00:00"},"epss":{"cve":"CVE-2011-4861","score":0.03036,"percentile":0.87506,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}