Is CVE-2018-7857 in the CISA KEV catalog?

No. CVE-2018-7857 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-7857?

CVE-2018-7857 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2018-7857?

CVE-2018-7857 has an EPSS score of 1.58% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-7857?

Upgrade modicon m340 firmware to 3.01 or later. Fixes are available for 4 affected products.

CVE & CISA-KEV Catalog

CVE-2018-7857

HIGHEPSS 72th pctl

7.5

CVSS v3

NVD

Description

A CWE-248: Uncaught Exception vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause a possible Denial of Service when writing out of bounds variables to the controller over Modbus.

CWE-754

How to fix

Remediation Available

modicon m340 firmwareNVD

Affected:< 3.01Fixed in:3.01CVE-2018-7857derived from NVD

modicon m580 firmwareNVD

Affected:< 2.80Fixed in:2.80CVE-2018-7857derived from NVD

modicon premium firmwareNVD

Affected:< 3.20Fixed in:3.20CVE-2018-7857derived from NVD

modicon quantum firmwareNVD

Affected:< 3.60Fixed in:3.60CVE-2018-7857derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.58%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Exploit1

talosintelligence.com

Vendor Advisory1

schneider-electric.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.