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URL: https://nvd.nist.gov/vuln/detail/CVE-2021-25741

⇱ NVD - CVE-2021-25741

  1. Vulnerabilities

CVE-2021-25741 Detail

Modified After Enrichment

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/kubernetes/kubernetes/issues/104980 CVE, Kubernetes Mitigation  Third Party Advisory 
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s CVE, Kubernetes Mailing List  Mitigation 
https://security.netapp.com/advisory/ntap-20211008-0006/ CVE, Kubernetes Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-552 Files or Directories Accessible to External Parties 👁 cwe source acceptance level
NIST  
CWE-20 Improper Input Validation Kubernetes  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

7 change records found show changes

CVE Modified by CISA-ADP 6/16/2026 11:42:23 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"kubernetes","product":"kubernetes","defaultStatus":"unknown","cpes":["cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*"],"versions":[{"version":"0","lessThanOrEqual":"1.19.14","versionType":"custom","status":"affected"},{"version":"1.20.0","lessThanOrEqual":"1.20.10","versionType":"custom","status":"affected"},{"version":"1.21.0","lessThanOrEqual":"1.21.4","versionType":"custom","status":"affected"},{"version":"1.22.0","lessThanOrEqual":"1.22.1","versionType":"custom","status":"affected"}]}]
Added SSVC 
{"timestamp":"2024-08-20T13:25:58.469004Z","id":"CVE-2021-25741","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}

CVE Modified by Kubernetes 6/16/2026 11:42:23 PM

Action Type Old Value New Value
Added Affected 
[{"vendor":"Kubernetes","product":"Kubernetes","versions":[{"version":"unspecified","lessThanOrEqual":"1.19.14","versionType":"custom","status":"affected"},{"version":"unspecified","lessThanOrEqual":"1.20.10","versionType":"custom","status":"affected"},{"version":"unspecified","lessThanOrEqual":"1.21.4","versionType":"custom","status":"affected"},{"version":"unspecified","lessThanOrEqual":"1.22.1","versionType":"custom","status":"affected"}]}]

CVE Modified by CVE 11/21/2024 12:55:19 AM

Action Type Old Value New Value
Added Reference 
https://github.com/kubernetes/kubernetes/issues/104980
Added Reference 
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s
Added Reference 
https://security.netapp.com/advisory/ntap-20211008-0006/

CVE Modified by Kubernetes 5/14/2024 4:30:56 AM

Action Type Old Value New Value

Modified Analysis by NIST 11/30/2021 5:42:34 PM

Action Type Old Value New Value
Changed Reference Type 
https://security.netapp.com/advisory/ntap-20211008-0006/ No Types Assigned


 
https://security.netapp.com/advisory/ntap-20211008-0006/ Third Party Advisory

CVE Modified by Kubernetes 10/08/2021 11:15:08 AM

Action Type Old Value New Value
Added Reference 
https://security.netapp.com/advisory/ntap-20211008-0006/ [No Types Assigned]

Initial Analysis by NIST 9/29/2021 2:32:28 PM

Action Type Old Value New Value
Added CVSS V3.1 
NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Added CVSS V2 
NIST (AV:N/AC:L/Au:S/C:P/I:P/A:N)
Added CWE 
NIST CWE-552
Added CPE Configuration 
OR
 *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions up to (including) 1.19.14
 *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from (including) 1.20.0 up to (including) 1.20.10
 *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from (including) 1.21.0 up to (including) 1.21.4
 *cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:* versions from (including) 1.22.0 up to (including) 1.22.1
Changed Reference Type 
https://github.com/kubernetes/kubernetes/issues/104980 No Types Assigned


 
https://github.com/kubernetes/kubernetes/issues/104980 Mitigation, Third Party Advisory
Changed Reference Type 
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s No Types Assigned


 
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s Mailing List, Mitigation

Quick Info

CVE Dictionary Entry:
CVE-2021-25741
NVD Published Date:
09/20/2021
NVD Last Modified:
06/16/2026
Source:
Kubernetes