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Microsoft Security Response CenterCVE-2026-28388

NULL Pointer Dereference When Processing a Delta CRL

Mariner

Read the vendor bulletin Get alerts for azl3 openssl 3.3.5-4 on Azure Linux
5.9CVSS out of 10Medium severity
Scope

What the vendor says is affected

  • azl3 openssl 3.3.5-4 on Azure Linux 3.0
  • cbl2 edk2 20230301gitf80f052277c8-47 on CBL Mariner 2.0
  • cbl2 hvloader 1.0.1-18 on CBL Mariner 2.0
  • cbl2 openssl 1.1.1k-39 on CBL Mariner 2.0
  • azl3 nodejs24 24.13.0-3 on Azure Linux 3.0
  • azl3 qemu 9.1.0-1 on Azure Linux 3.0
  • azl3 rust 1.75.0-27 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

Versions the vendor lists as fixed

  • 3.3.5-5
  • 1.1.1k-40
Next step

What the vendor recommends

CBL-Mariner Releases

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  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.

Vulnerabilities

CVEs named in this advisory

CVE-2026-28388View CVSS, KEV, EPSS, and threat context
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