CVE-2021-25741
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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.96%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 7.96% probability · 95th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-20, CWE-552
- Affected
- kubernetes/kubernetes
- Source
- jordan@liggitt.net
EPSS 8.0% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/kubernetes/kubernetes/issues/104980Mitigation, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7sMailing List, Mitigation
- https://security.netapp.com/advisory/ntap-20211008-0006/Third Party Advisory
- https://github.com/kubernetes/kubernetes/issues/104980Mitigation, Third Party Advisory
- https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7sMailing List, Mitigation
- https://security.netapp.com/advisory/ntap-20211008-0006/Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.