CVE-2021-25318: Rancher

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A Incorrect Permission Assignment for Critical Resource vulnerability in Rancher allows users in the cluster to modify resources they should not have access to. This issue affects: Rancher versions prior to 2.5.9 ; Rancher versions prior to 2.4.16.

Affected products

• Rancher Rancher: before 2.4.16 (fixed in 2.4.16); from 2.5.0, before 2.5.9 (fixed in 2.5.9)

Published 2021-07-15. Last modified 2026-06-17.