Kata Containers - Cloud Hypervisor guests persist filesystem changes to the underlying host image file

published 2020-05-19 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-22052

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 24%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 links 1

Kata Containers Kata Containers 1.11.0

github.com/kata-containers/runtime#2487 pull request

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 24% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	3.1	8.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
NVD	2.0	4.6	AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

Kata Containers Kata Containers

Classification

Weakness

CWE-284 Improper Access Control
CWE-281 Improper Preservation of Permissions

References

github.com /kata-containers/runtime/pull/2487
patch, third-party-advisory

Sources

CVE List CVE-2020-2025
NVD CVE-2020-2025

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary