Is CVE-2021-40333 in the CISA KEV catalog?

No. CVE-2021-40333 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-40333?

CVE-2021-40333 has a CVSS v3 base score of 9.0 (CRITICAL).

What is the EPSS score for CVE-2021-40333?

CVE-2021-40333 has an EPSS score of 0.63% (46th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-40333?

Upgrade fox615 firmware to r15a or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-40333

CRITICAL

9.0

CVSS v3

NVD

Description

Weak Password Requirements vulnerability in Hitachi Energy FOX61x, XCM20 allows an attacker to gain unauthorized access to the Data Communication Network (DCN) routing configuration. This issue affects: Hitachi Energy FOX61x versions prior to R15A. Hitachi Energy XCM20 versions prior to R15A.

CWE-521

How to fix

Remediation Available

fox615 firmwareNVD

Affected:< r15aFixed in:r15aCVE-2021-40333derived from NVD

xcm20 firmwareNVD

Affected:< r15aFixed in:r15aCVE-2021-40333derived 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 RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.63%probability of exploitation in 30 days

46thpercentile

Moderate risk: more likely to be exploited than 46% of all known CVEs.

References

Vendor Advisory2

Related Vulnerabilities

Other CWE-521 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-17444	Critical	9.8	69%	-	Fix
CVE-2012-2441	High	8.5	8.6%	-	Fix
CVE-2017-3186	Critical	9.8	6.1%	-	-
CVE-2018-1000134	Critical	9.8	4.9%	-	-
CVE-2019-18988	High	7.0	4.7%	KEV	-
CVE-2017-6339	Medium	6.5	4.1%	-	-

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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.