How severe is CVE-2018-7243?

CVE-2018-7243 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-7243 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-7243?

CVE-2018-7243 affects Schneider-electric 66074 Mge Network Management Card Transverse. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-7243?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2018-7243 published?

CVE-2018-7243 was published on 2018-04-18 and last updated on 2026-06-17.

CVE-2018-7243

CVE-2018-7243 is a critical-severity vulnerability in Schneider-electric 66074 Mge Network Management Card Transverse with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Schneider-electric 66074 Mge Network Management Card Transverse
Published: 2018-04-18
Last modified: 2026-06-17

Description

An authorization bypass vulnerability exists In Schneider Electric's 66074 MGE Network Management Card Transverse installed in MGE UPS and MGE STS. The integrated web server (Port 80/443/TCP) of the affected devices could allow a remote attacker to get a full access to device, bypassing the authorization system.

Frequently asked questions

What is CVE-2018-7243?: An authorization bypass vulnerability exists In Schneider Electric's 66074 MGE Network Management Card Transverse installed in MGE UPS and MGE STS. The integrated web server (Port 80/443/TCP) of the affected devices could allow a remote attacker to get a full access to device, bypassing the authorization system.
How severe is CVE-2018-7243?: CVE-2018-7243 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-7243 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-7243?: CVE-2018-7243 affects Schneider-electric 66074 Mge Network Management Card Transverse. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-7243?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2018-7243 published?: CVE-2018-7243 was published on 2018-04-18 and last updated on 2026-06-17.

References

https://www.schneider-electric.com/en/download/document/SEVD-2018-074-01/

Affected products (1)

cpe:2.3:h:schneider-electric:66074_mge_network_management_card_transverse:-:*:*:*:*:*:*:*

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