Back to vendor advisories
Microsoft Security Response CenterCVE-2026-31789

Heap Buffer Overflow in Hexadecimal Conversion

MediumVendor CVSS 4.7 / 10 1 CVE Published Apr 9, 2026 at 1:02 AM UTC

Summary

Mariner

Products covered

  • azl3 openssl 3.3.5-4 on Azure Linux 3.0

  • azl3 nodejs24 24.13.0-3 on Azure Linux 3.0

  • azl3 qemu 9.1.0-1 on Azure Linux 3.0

  • azl3 rust 1.90.0-6 on Azure Linux 3.0

  • azl3 nodejs24 24.14.1-1 on Azure Linux 3.0

Remediation

CBL-Mariner Releases

Vendor-listed fixes

  • 3.3.5-5

CVEs in this advisory 1

Update history

What changed in later vendor updates

SecurityAlert records field-level changes from the point we begin following a bulletin. Earlier vendor changes may not have a field-by-field record.

    • CVSS changed from 5.8 to 4.7.
    • Removed affected products: azl3 openvmm 0.2.0-1 on Azure Linux 3.0.
    • The vendor changed its remediation guidance.
    • CVSS changed from 4.7 to 5.8.
    • Added affected products: azl3 openvmm 0.2.0-1 on Azure Linux 3.0.
    • The vendor changed its remediation guidance.
    • The vendor changed the advisory's last-updated date.
    • The vendor changed the advisory's last-updated date.

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

  3. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  4. Confirmed at the source

    Our collector saw this advisory during a later source check.