CVE-2018-7758

Name: CVE-2018-7758
Creator: NVD / NIST
Published: 2018-04-18T20:29:00.623+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 0.63%

Last modified Jun 17, 2026

CVE-2018-7758 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 0.63% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

0.63%

45.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-613

Affected Software

Vendor	Product	Versions
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 P642 Firmware	All versions
Schneider-Electric	Micom P643 Firmware	All versions
Schneider-Electric	Micom P645 Firmware	All versions
Schneider-Electric	Micom P849 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 P443 Firmware	All versions
Schneider-Electric	Micom P445 Firmware	All versions
Schneider-Electric	Micom P446 Firmware	All versions
Schneider-Electric	Micom P441 Firmware	All versions
Schneider-Electric	Micom P442 Firmware	All versions
Schneider-Electric	Micom P444 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

References

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

Timeline

Published: Apr 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-7758?

How severe is CVE-2018-7758?

Severity scoring for CVE-2018-7758 is pending analysis. The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.

How do I fix CVE-2018-7758?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-7758?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST