Modicon M258 Firmware
Monthly
Cross-site scripting in Schneider Electric Modicon PLC embedded web servers (M258, LMC058, M251, M241) allows authenticated low-privilege attackers to inject persistent JavaScript payloads that execute in a victim engineer's browser upon hovering over a crafted element. In industrial OT environments, successful exploitation could compromise engineering workstation sessions, steal credentials used to configure programmable logic controllers, or manipulate displayed process data. No public exploit code exists and the CVE is absent from CISA KEV; EPSS at 0.05% (14th percentile) confirms low current exploitation likelihood, though the ICS context elevates operational consequence beyond what raw scores suggest.
Scripting') vulnerability exists that could cause a vulnerability leading to a cross-site scripting condition where attackers can have a victim’s browser run arbitrary JavaScript when they visit a. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.
A CWE-319: Cleartext Transmission of Sensitive Information vulnerability exists which could leak sensitive information transmitted between the software and the Modicon M218, M241, M251, and M258. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists which could allow the attacker to execute malicious code on the Modicon M218, M241, M251, and M258 controllers. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Cross-site scripting in Schneider Electric Modicon PLC embedded web servers (M258, LMC058, M251, M241) allows authenticated low-privilege attackers to inject persistent JavaScript payloads that execute in a victim engineer's browser upon hovering over a crafted element. In industrial OT environments, successful exploitation could compromise engineering workstation sessions, steal credentials used to configure programmable logic controllers, or manipulate displayed process data. No public exploit code exists and the CVE is absent from CISA KEV; EPSS at 0.05% (14th percentile) confirms low current exploitation likelihood, though the ICS context elevates operational consequence beyond what raw scores suggest.
Scripting') vulnerability exists that could cause a vulnerability leading to a cross-site scripting condition where attackers can have a victim’s browser run arbitrary JavaScript when they visit a. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability exists in Modicon M258 Firmware (All versions prior to V5.0.4.11) and SoMachine/SoMachine Motion. Rated medium severity (CVSS 6.8), this vulnerability is low attack complexity. No vendor patch available.
A CWE-319: Cleartext Transmission of Sensitive Information vulnerability exists which could leak sensitive information transmitted between the software and the Modicon M218, M241, M251, and M258. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A CWE-345: Insufficient Verification of Data Authenticity vulnerability exists which could allow the attacker to execute malicious code on the Modicon M218, M241, M251, and M258 controllers. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
A CWE-306: Missing Authentication for Critical Function vulnerability exists which could cause a modification of device IP configuration (IP address, network mask and gateway IP address) when a. Rated high severity (CVSS 8.2), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.