Vulnerability in Kubernetes Image Builder
CVE-2025-7342
A security issue was discovered in the Kubernetes Image Builder where default credentials are enabled during the Windows image build process when using the Nutanix or VMware OVA providers. These credentials, which allow root access, are disabled at the conclusion of the build. Kubernetes clusters are only affected if their nodes use VM images created via the Image Builder project and the vulnerability was exploited during the build process, which requires an attacker to access the build VM and modify the image while the build is in progress.
EPSS: 0.003 (27.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Kubernetes Image Builder — versions 0, 0.1.45
Weakness classification (CWE)
Public proof-of-concept exploits
References
- jordan@liggitt.net (mailing-list)
- jordan@liggitt.net (issue-tracking)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-7342?
- CVE-2025-7342 is a high-severity vulnerability in Kubernetes Image Builder, classified under Use of Hard-coded Credentials. CVSS score: 7.5/10. Published 2025-08-17.
- How severe is CVE-2025-7342?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-7342 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.