Security readout for executives and security teams
This CVE describes a remote firmware-update weakness in Schneider Electric Quantum NOE 771 Ethernet modules. If an attacker can reach Modbus TCP port 502, the source says they may install arbitrary firmware. For industrial systems, that can threaten process availability and device integrity, especially where control networks are exposed or weakly segmented. Likely exposure is limited to environments running Schneider Electric Quantum 140NOE771* or NOE 771 Ethernet modules with Modbus TCP reachable by untrusted hosts. The provided data does not identify affected firmware versions, default configurations, or whether all 140NOE771 variants are affected. Prioritize this for any site using Schneider Quantum NOE 771 modules, especially if TCP 502 crosses trust boundaries. The business concern is not normal IT data theft; it is loss of integrity or availability in industrial control equipment. Evidence is incomplete on patches, so asset confirmation and vendor guidance are immediate next steps. Mitigation focus: Identify Schneider Quantum NOE 771 or 140NOE771* modules in operational networks.; Check Schneider Electric guidance for affected versions and supported firmware remediation.; Block untrusted access to TCP port 502 on these devices..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
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CVE-2011-4861 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
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- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
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CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
Products and packages named in the record
CWE details
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