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Vulnerabilities

Vulnerability · CVE-2025-53945

apko allows users to build and publish OCI container images built from apk packages.

Published Jul 18, 2025 · catalog updated Jul 22, 2025 · apko allows users to

Last checked Oct 26, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-53945. EPSS is 0.14%. Act only if a listed version of apko allows users to is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (apko allows users to).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.14%
Remediation
Version ranges on file
Affected products
vendor chainguard-dev apko 0.27.0, < 0.29.5

apko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor chainguard-dev apko 0.27.0, < 0.29.50.27.0, < 0.29.5

How to fix CVE-2025-53945

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-53945. EPSS is 0.14%. Act only if a listed version of apko allows users to is installed.

Which versions are affected?

Compare what you have installed with chainguard-dev apko 0.27.0, < 0.29.5 0.27.0, < 0.29.5. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.14%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 18, 2025 · EUVD

    Detected

    apko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.

  2. Jul 22, 2025 · EUVD

    Updated

    apko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.

Sources

  • CVE.orgVulnerability recordCVE-2025-53945

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-53945

    30-day exploitation probability 0.14%

    first.org
  • EUVDVulnerability recordEUVD-2025-21896

    apko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issu

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 26, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSOct 23, 2026
  • CVE.orgOct 21, 2026
  • EUVDOct 21, 2026