What’s Vulnerable › Vulnerabilities

CVE-2018-7758

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-18 · updated 2026-06-17
• Weakness: CWE-613

Description

A denial of service vulnerability exists in Schneider Electric's MiCOM Px4x (P540 range excluded) with legacy Ethernet board, MiCOM P540D Range with Legacy Ethernet Board, and MiCOM Px4x Rejuvenated could lose network communication in case of TCP/IP open requests on port 20000 (DNP3oE) if an older TCI/IP session is still open with identical IP address and port number.

Affected products

• Schneider-Electric Micom P141 Firmware: all versions
• Schneider-Electric Micom P142 Firmware: all versions
• Schneider-Electric Micom P143 Firmware: all versions
• Schneider-Electric Micom P145 Firmware: all versions
• Schneider-Electric Micom P441 Firmware: all versions
• Schneider-Electric Micom P442 Firmware: all versions
• Schneider-Electric Micom P443 Firmware: all versions
• Schneider-Electric Micom P444 Firmware: all versions
• Schneider-Electric Micom P445 Firmware: all versions
• Schneider-Electric Micom P446 Firmware: all versions
• Schneider-Electric Micom P541 Firmware: all versions
• Schneider-Electric Micom P542 Firmware: all versions
• Schneider-Electric Micom P543 Firmware: all versions
• Schneider-Electric Micom P544 Firmware: all versions
• Schneider-Electric Micom P545 Firmware: all versions
• Schneider-Electric Micom P546 Firmware: all versions
• Schneider-Electric Micom P642 Firmware: all versions
• Schneider-Electric Micom P643 Firmware: all versions
• Schneider-Electric Micom P645 Firmware: all versions
• Schneider-Electric Micom P746 Firmware: all versions
• Schneider-Electric Micom P841A Firmware: all versions
• Schneider-Electric Micom P841B Firmware: all versions
• Schneider-Electric Micom P849 Firmware: all versions

References

• https://www.schneider-electric.com/en/download/document/SEVD-2018-074-02/
• https://www.schneider-electric.com/en/download/document/SEVD-2018-074-03/
• https://www.schneider-electric.com/en/download/document/SEVD-2018-074-04/
• https://www.schneider-electric.com/en/download/document/SEVD-2018-074-02/
• https://www.schneider-electric.com/en/download/document/SEVD-2018-074-03/
• https://www.schneider-electric.com/en/download/document/SEVD-2018-074-04/

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