CVE-2020-2025: Kata Containers - Cloud Hypervisor guests persist filesystem changes to the underlying host image file

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-05-19 · updated 2026-06-17
Weakness: CWE-284

Description

Kata Containers before 1.11.0 on Cloud Hypervisor persists guest filesystem changes to the underlying image file on the host. A malicious guest can overwrite the image file to gain control of all subsequent guest VMs. Since Kata Containers uses the same VM image file with all VMMs, this issue may also affect QEMU and Firecracker based guests.

Affected products

Katacontainers Runtime: before 1.11.0 — fixed in 1.11.0

How to fix

Upgrade to a fixed version: Katacontainers Runtime 1.11.0. Check the vendor advisory for mitigations.

References

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