VULNERABILITY INTELLIGENCE

CVE-2021-25741

CVSS score8.8 HIGH

EPSS probability7.96%

CISA KEVNot currently listed

Published2021-09-20

Last modified2026-06-17

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

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.

Weakness classification

jordan@liggitt.net: CWE-20
nvd@nist.gov: CWE-552

Primary references

jordan@liggitt.net — Mitigation, Third Party Advisory
jordan@liggitt.net — Mailing List, Mitigation
jordan@liggitt.net — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mitigation, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Mailing List, Mitigation
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory