CVE-2021-25740LowMicrosoft CVSS 3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

Microsoft security update for CVE-2021-25740 — azl3 kubernetes

Published
June 3, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2021-25740 →

📋 Microsoft's advisory

EchelonGraph does not copy Microsoft's advisory page: its FAQ and remediation text are not shown here. Read the advisory on https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-25740. This page also shows what EchelonGraph holds for CVE-2021-25740, with the description from its CVE record, which the CVE Numbering Authority that assigned the CVE wrote: for a CVE Microsoft assigned, often in the words of Microsoft's own advisory.

🎯 Affected products6

  • azl3 kubernetes 1.30.10-25 on Azure Linux 3.0
  • azl3 kubernetes 1.30.10-27 on Azure Linux 3.0
  • azl3 kubernetes 1.30.10-29 on Azure Linux 3.0
  • azl3 kubernetes 1.30.10-30 on Azure Linux 3.0
  • azl3 kubernetes 1.30.10-32 on Azure Linux 3.0
  • azl3 kubernetes 1.30.10-33 on Azure Linux 3.0

✅ Updates Microsoft lists: 2 updates

2 rows: one per KB article or update, update type and fixed build. Their details are on Microsoft's advisory.

KB articleUpdateFixed build
—Security Update—
—Security Update—

🧭 EchelonGraph on CVE-2021-25740

EchelonGraph score
3.1 LOW
CISA KEV
Not listed
Fix status
A fix is available — apply it.

Description from the CVE record (CVE.org), as published by its numbering authority

A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.

Published by Kubernetes, the CVE Numbering Authority that assigned CVE-2021-25740, in its CVE record at CVE.org; reused under the CVE Program's Terms of Use (its licence and MITRE's copyright notice are in our Terms of Service).

🔗 References (2)