CVE-2021-42124: Ivanti Avalanche

High severity, CVSS 8.8. EPSS: 2.7% chance of exploitation in the next 30 days.

An improper access control vulnerability exists in Ivanti Avalanche before 6.3.3 allows an attacker with access to the Inforail Service to perform a session takeover.

Affected products

• Ivanti Avalanche: before 6.3.3 (fixed in 6.3.3)

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