CVE-2026-102120: Accellion Kiteworks

High severity, CVSS 8.8. EPSS: 0.4% chance of exploitation in the next 30 days.

A privilege escalation vulnerability in Kiteworks could have allowed an attacker who had already obtained code execution on one node of a clustered Kiteworks deployment to run operating system commands with elevated privileges on another node of the same cluster. Insufficient input validation in an internal cluster management function let attacker-supplied values reach a privileged execution context; exploitation requires existing access to a node in the cluster, and the affected function is not reachable from outside the cluster.

Affected products

• Accellion Kiteworks: before 9.5.1 (fixed in 9.5.1)

Published 2026-09-30. Last modified 2026-10-07.