Is CVE-2021-42128 in the CISA KEV catalog?

No. CVE-2021-42128 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-42128?

CVE-2021-42128 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2021-42128?

CVE-2021-42128 has an EPSS score of 4.50% (90th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-42128?

Upgrade avalanche to 6.3.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-42128

CRITICALEPSS 90th pctl

9.8

CVSS v3

NVD

Description

An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 using inforail Service allows Privilege Escalation via Enterprise Server Service.

CWE-749

How to fix

Remediation Available

avalancheNVD

Affected:< 6.3.3Fixed in:6.3.3CVE-2021-42128derived 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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.50%probability of exploitation in 30 days

90thpercentile

High risk: more likely to be exploited than 90% of all known CVEs.

References

Vendor Advisory1

forums.ivanti.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.