How severe is CVE-2018-7758?

CVE-2018-7758 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2018-7758 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7758?

CVE-2018-7758 primarily affects Schneider-electric Micom P141 Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-7758?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-7758 published?

CVE-2018-7758 was published on 2018-04-18 and last updated on 2026-06-17.

CVE-2018-7758

CVE-2018-7758 is a medium-severity vulnerability in Schneider-electric Micom P141 Firmware with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-613.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-613
Affected product: Schneider-electric Micom P141 Firmware
Published: 2018-04-18
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2018-7758?: 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.
How severe is CVE-2018-7758?: CVE-2018-7758 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2018-7758 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7758?: CVE-2018-7758 primarily affects Schneider-electric Micom P141 Firmware. In total, 23 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-7758?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-7758 published?: CVE-2018-7758 was published on 2018-04-18 and last updated on 2026-06-17.

References

Affected products (23)

cpe:2.3:o:schneider-electric:micom_p141_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p142_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p143_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p145_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p642_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p643_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p645_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p849_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p746_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p841a_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p841b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p443_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p445_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p446_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p441_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p442_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p444_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p541_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p542_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p543_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p544_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p545_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:schneider-electric:micom_p546_firmware:-:*:*:*:*:*:*:*

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