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Microsoft Security Response CenterCVE-2025-32415

In libxml2 before 2.13.8 and 2.14.x before 2.14.2, xmlSchemaIDCFillNodeTables in xmlschemas.c has a heap-based buffer under-read. To exploit this, a crafted XML document must be validated against an XML schema with certain identity constraints, or a crafted XML schema must be used.

LowVendor CVSS 2.9 / 10 1 CVE Published May 27, 2025 at 12:00 AM UTC
Get alerts for azl3 libxml2 2.11.5-5 on Azure Linux

Summary

Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?

One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information.

If impact to additional products is identified, we will update the CVE to reflect this.

Products covered

  • azl3 libxml2 2.11.5-5 on Azure Linux 3.0

  • cbl2 libxml2 2.10.4-7 on CBL Mariner 2.0

  • cbl2 libxml2 2.10.4-7 on CBL-Mariner 2.0

Remediation

CBL-Mariner Releases

Vendor-listed fixes

  • 2.11.5-5

  • 2.10.4-7

CVEs in this advisory 1

CVE-2025-32415

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

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