CVE-2021-25320

Name: CVE-2021-25320
Creator: NVD / NIST
Published: 2021-07-15T09:15:08.143+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.9/10EPSS 0.83%

Last modified Jun 17, 2026

CVE-2021-25320 is a critical-severity vulnerability rated 9.9/10 on the CVSS scale. A Improper Access Control vulnerability in Rancher, allows users in the cluster to make request to cloud providers by creating requests with the cloud-credential ID. Rancher in this case would attach the requested credentials without further checks This issue affects: Rancher versions prior to 2.5.9; Rancher versions prior to 2.4.16.. EPSS estimates a 0.83% chance of exploitation in the next 30 days.

Description

A Improper Access Control vulnerability in Rancher, allows users in the cluster to make request to cloud providers by creating requests with the cloud-credential ID. Rancher in this case would attach the requested credentials without further checks This issue affects: Rancher versions prior to 2.5.9; Rancher versions prior to 2.4.16.

Metrics

CVSS 3.1

9.9/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.83%

52.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Rancher	Rancher	< 2.4.16
Rancher	Rancher	>= 2.5.0, < 2.5.9

References

https://bugzilla.suse.com/show_bug.cgi?id=1185514Issue Tracking, Third Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=1185514Issue Tracking, Third Party Advisory

Timeline

Published: Jul 15, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-25320?

How severe is CVE-2021-25320?

CVE-2021-25320 has a CVSS score of 9.9/10 (CRITICAL severity). The EPSS model estimates a 0.83% probability of exploitation in the next 30 days.

How do I fix CVE-2021-25320?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-25320?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST