Is CVE-2021-21388 in the CISA KEV catalog?

No. CVE-2021-21388 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-21388?

CVE-2021-21388 has a CVSS v3 base score of 8.9 (HIGH).

What is the EPSS score for CVE-2021-21388?

CVE-2021-21388 has an EPSS score of 1.85% (77th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-21388?

Upgrade systeminformation to 5.6.4 or later.

CVE & CISA-KEV Catalog

CVE-2021-21388

HIGHEPSS 77th pctl

8.9

CVSS v3

NVD

Description

systeminformation is an open source system and OS information library for node.js. A command injection vulnerability has been discovered in versions of systeminformation prior to 5.6.4. The issue has been fixed with a parameter check on user input. Please upgrade to version >= 5.6.4. If you cannot upgrade, be sure to check or sanitize service parameters that are passed to si.inetLatency(), si.inetChecksite(), si.services(), si.processLoad() and other commands. Only allow strings, reject any arrays. String sanitation works as expected.

CWE-20Improper Input Validation CWE-78OS Command Injection

How to fix

Remediation Available

systeminformationNVD

Affected:< 5.6.4Fixed in:5.6.4CVE-2021-21388derived 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 RequiredLow

User InteractionRequired

ScopeChanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityHigh

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

Exploit Intelligence

1.85%probability of exploitation in 30 days

77thpercentile

Elevated risk: more likely to be exploited than 77% of all known CVEs.

References

Patch3

Third-Party Advisory2

Related Vulnerabilities

Other CWE-20 (Improper Input Validation) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2021-45105	Medium	5.9	100%	-	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-21985	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2018-7600	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2020-3452	High	7.5	100%	KEV	Fix

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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.