What is CVE-2021-42128?

CVE-2021-42128 is a critical-severity vulnerability in Ivanti Avalanche, classified under CWE-749. CVSS score: 9.8/10. Published 2021-12-07.

How severe is CVE-2021-42128?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-42128 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Ivanti Avalanche

CVE-2021-42128

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

EPSS: 0.045 (90.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ivanti Avalanche
N/a Ivanti Avalanche — versions 6.3.3

Weakness classification (CWE)

CWE-749

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

support@hackerone.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-42128?: CVE-2021-42128 is a critical-severity vulnerability in Ivanti Avalanche, classified under CWE-749. CVSS score: 9.8/10. Published 2021-12-07.
How severe is CVE-2021-42128?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-42128 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.