Schneider Electric Modicon Network Managed Switches
Schneider Electric is aware of a RADIUS protocol vulnerability affecting its Modicon Network Managed Switch product. The Modicon Network Managed Switch product provides connectivity for multiple Ethernet devices, network management, enhanced cyber security and more advanced switching features. Failure to apply the mitigation provided below may risk forgery attacks in RADIUS Protocol, which could result in modification of any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any other response which could result in the possibility of denial of service and loss of confidentiality, integrity of the devices connected to the switch.
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2024-3596US | critical9.0OT high | Exploit | ||
RADIUS Protocol under RFC 2865 is susceptible to forgery attacks by a local attacker who can modify any valid Response (Access-Accept, Access-Reject, or Access-Challenge) to any ot… | ||||
references
External citations — patches, advisories, analysis.
- Third-Party vulnerability on Modicon Networking Managed Switches - SEVD-2026-104-02 PDF Versionself
- Third-Party vulnerability on Modicon Networking Managed Switches - SEVD-2026-104-02 CSAF Versionself
- ICS Advisory ICSA-26-160-01 JSONself
- ICS Advisory ICSA-26-160-01 - Web Versionself
- Recommended Practicesexternal
- Recommended Practicesexternal
- Recommended Practicesexternal
- Recommended Practicesexternal
remediations (3)
- MitigationConnexium Managed Switches
The default RADIUS configuration is not vulnerable. However, if the RADIUS Server Message Authenticator option is disabled, the product becomes vulnerable.We advise keeping this parameter in its default (enabled) state.This parameter can be configured via CLI and SNMP:TCSESM* CLI: radius server msgauthMIB: hmAgentRadiusServerMsgAuth
- MitigationModicon Managed Switches
The default RADIUS configuration is not vulnerable. However, if the RADIUS Server Message Authenticator option is disabled, the product becomes vulnerable.We advise keeping this parameter in its default (enabled) state.This parameter can be configured via CLI and SNMP:MCSESM*, MCSESP* CLI: radius server auth modify <index> msgauth MIB: hm2AgentRadiusServerMsgAuth
- MitigationModicon Redundancy Switches
The default RADIUS configuration is not vulnerable. However, if the RADIUS Server Message Authenticator option is disabled, the product becomes vulnerable.We advise keeping this parameter in its default (enabled) state.This parameter can be configured via CLI and SNMP:MCSESR* CLI: radius server auth modify <index> msgauth MIB: hm2AgentRadiusServerMsgAuth
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan