Rancher
CVE-2021-25320
CRITICAL
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Access control enforcement
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 9.9 (CRITICAL). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. |
| Exploit ScenarioDerived | This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system. |
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Alert meAnalysisAI
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. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified under CWE-284. 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. Affected products include: Rancher. Version information: prior to 2.5.9.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)NVD
Command injection in Rancher Manager’s cluster import endpoint enables remote attackers to deploy malicious containers o
An Improper Authorization vulnerability in SUSE Rancher, allows any user who has permissions to create/edit cluster role
A Cleartext Transmission of Sensitive Information vulnerability in SUSE Rancher, Rancher allows attackers on the network
Improper Privilege Management vulnerability in SUSE Rancher allows Privilege Escalation. Rated critical severity (CVSS 9
An issue was discovered that affects the following versions of Rancher: v2.0.0 through v2.0.13, v2.1.0 through v2.1.8, a
Stored cross-site scripting in the SUSE Rancher UI allows unauthenticated remote attackers to inject malicious script th
SAML assertion replay in Rancher's Assertion Consumer Service (ACS) handler lets a person-in-the-middle who captures a v
Privilege escalation in SUSE Rancher (Kubernetes management platform) allows a user holding the Project Owner role to im
Rancher Labs rancher server 1.2.0+ is vulnerable to authenticated users disabling access control via an API call. Rated
A Improper Privilege Management vulnerability in SUSE Rancher causes permission changes in Azure AD not to be reflected
Privilege escalation in Rancher 2.13 (before 2.13.6) and 2.14 (before 2.14.2) lets any authenticated user gain principal
Privilege escalation in SUSE Rancher Fleet (0.14.x before 0.14.11, 0.15.x before 0.15.7, and 0.16.x before 0.16.2) lets
GitHub PoC
Exploit-DB