CVE-2021-42128
Critical
Published: 07 December 2021
Published
07 December 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score
0.1689
95.1th percentile
Risk Priority
30
60% EPSS · 20% KEV · 20% CVSS
Summary
CVE-2021-42128 is a critical-severity Exposed Dangerous Method or Function (CWE-749) vulnerability in Ivanti Avalanche. Its CVSS base score is 9.8 (Critical).
Operationally, ranked in the top 4.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2021-29113
Vulnerability details
An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 using inforail Service allows Privilege Escalation via Enterprise Server Service.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
ivanti
avalanche
≤ 6.3.3
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.