CVE-2025-7342Network attack vector

Root access via default Windows build credentials

Published Aug 17, 2025 · Updated Nov 4, 2025

Use of default credentials in Kubernetes Image Builder 0.1.44 and earlier allows remote attackers to gain Administrator access. The Windows OVA and Nutanix build paths provision an Administrator account with default credentials and disable it only when image creation finishes. Exploitation requires access to the build VM during image creation; modifying the image at that stage preserves privileged access in deployed nodes.

CVSS severity7.5
High
EPSS probability0.35%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of default credentials in Kubernetes Image Builder 0.1.44 and earlier allows remote attackers to gain Administrator access. The Windows OVA and Nutanix build paths provision an Administrator account with default credentials and disable it only when image creation finishes. Exploitation requires access to the build VM during image creation; modifying the image at that stage preserves privileged access in deployed nodes.

The record

CVE
CVE-2025-7342
Published
Aug 17, 2025
Updated
Nov 4, 2025
Vendor
Kubernetes
Product
Image Builder
Classifications
T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 17, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.1.44

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Kubernetes · Image Builderversion=0 <=0.1.44

Published CVSS scores

7.5Kubernetes Security Response CommitteeCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1078.001Valid Accounts: Default Accounts

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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