CVE-2026-4224MediumMicrosoft CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Microsoft security update for CVE-2026-4224

Published
May 31, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-4224 →

📋 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-2026-4224. This page also shows what EchelonGraph holds for CVE-2026-4224, 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 products8

  • azl3 python3 3.12.9-10 on Azure Linux 3.0
  • azl3 python3 3.12.9-11 on Azure Linux 3.0
  • azl3 python3 3.12.9-13 on Azure Linux 3.0
  • azl3 python3 3.12.9-14 on Azure Linux 3.0
  • azl3 python3 3.12.9-9 on Azure Linux 3.0
  • cbl2 python3 3.9.19-19
  • cbl2 python3 3.9.19-19 on CBL Mariner 2.0
  • cbl2 python3 3.9.19-19 on CBL-Mariner 2.0

✅ 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 Update3.9.19-21
—Security Update3.12.14-1

🧭 EchelonGraph on CVE-2026-4224

EchelonGraph score
7.5 HIGH
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

When an Expat parser with a registered ElementDeclHandler parses an inline document type definition containing a deeply nested content model a C stack overflow occurs.

Published by Python Software Foundation, the CVE Numbering Authority that assigned CVE-2026-4224, 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)