CVE-2021-25741
Published:September 20, 2021
Updated:July 21, 2026
A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.
Affected Packages
k8s.io/kubernetes (GO):
Affected version(s) >=v1.20.0 <v1.20.11Fix Suggestion:
Update to version v1.20.11k8s.io/kubernetes (GO):
Affected version(s) >=v0.0.0-20150129005104-7e134cb73dfe <v1.19.15Fix Suggestion:
Update to version v1.19.15k8s.io/kubernetes (GO):
Affected version(s) >=v1.22.0 <v1.22.2Fix Suggestion:
Update to version v1.22.2k8s.io/kubernetes (GO):
Affected version(s) >=v1.21.0 <v1.21.5Fix Suggestion:
Update to version v1.21.5Related Resources (7)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
8.8
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
EPSS
Base Score:
6.87