Medium (5.9) in ivanti avalanche. EPSS 2.3% chance of exploitation in the next 30 days.
An improper authentication vulnerability exists in Avalanche Premise versions 6.3.x and below that could allow an attacker to gain access to the server by registering to receive messages from the server and perform an authentication bypass.
Severity
CVSS 3.1
5.9 medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS
2.3% chance of exploitation in the next 30 days; higher than 82% of CVEs (scores of 2026-11-01)