The modbus_125_handler function in the Schneider Electric Quantum Ethernet Module on the…
Priority MEDIUM 48CWE-264Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- Complete · Complete · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-264.
Summary
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.
Why it matters now
EPSS 0.03036 87th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:schneider-electric:quantum_ethernet_module_140noe77100:*:*:*:*:*:*:*:* | up to 3.3; up to 3.4 | Vulnerable | Schneider Electric |
| cpe:2.3:a:schneider-electric:quantum_ethernet_module_140noe77101:*:*:*:*:*:*:*:* | up to 4.9 | Vulnerable | Schneider Electric |
| cpe:2.3:a:schneider-electric:quantum_ethernet_module_140noe77111:*:*:*:*:*:*:*:* | up to 5.0 | Vulnerable | Schneider Electric |
- cpe:2.3:a:schneider-electric:quantum_ethernet_module_140noe77100:*:*:*:*:*:*:*:* Versions up to 3.3; up to 3.4 Vulnerable ·Schneider Electric
- cpe:2.3:a:schneider-electric:quantum_ethernet_module_140noe77101:*:*:*:*:*:*:*:* Versions up to 4.9 Vulnerable ·Schneider Electric
- cpe:2.3:a:schneider-electric:quantum_ethernet_module_140noe77111:*:*:*:*:*:*:*:* Versions up to 5.0 Vulnerable ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2011-4861
- 2026-10-03 Alias added: GHSA-qjpg-9j88-997j
References
More Schneider Electric Quantum Ethernet Module 140noe77100 vulnerabilities
- TI-2011-04179 The Schneider Electric Quantum Ethernet Module, as used in the Quantum 140NOE771* and… CVSS 2.0HIGH 10.0
- TI-2011-04180 The ComputePassword function in the Schneider Electric Quantum Ethernet Module on the NOE… CVSS 2.0HIGH 10.0
Sources
- CVE-2011-4861 · CVE Program
- CVE-2011-4861 · NVD
- FIRST EPSS
- GHSA-qjpg-9j88-997j · GitHub Advisory Database · CC BY 4.0
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