CVE-2021-42133: Ivanti Avalanche

High severity, CVSS 8.1. EPSS: 2.9% chance of exploitation in the next 30 days.

An exposed dangerous function vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform an arbitrary file write.

Affected products

• Ivanti Avalanche: before 6.3.3 (fixed in 6.3.3)

Published 2021-12-07. Last modified 2026-06-17.