CVE-2024-56738MediumMicrosoft CVSS 6.7CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Microsoft security update for CVE-2024-56738

Published
September 3, 2025
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2024-56738 →

📋 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-2024-56738. This page also shows what EchelonGraph holds for CVE-2024-56738, 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 products10

  • azl3 grub2 2.06-24 on Azure Linux 3.0
  • azl3 grub2 2.06-25 on Azure Linux 3.0
  • azl3 grub2 2.06-26 on Azure Linux 3.0
  • azl3 grub2 2.06-27 on Azure Linux 3.0
  • azl3 grub2 2.06-28 on Azure Linux 3.0
  • cbl2 grub2 2.06-14 on CBL Mariner 2.0
  • cbl2 grub2 2.06-15 on CBL Mariner 2.0
  • cbl2 grub2 2.06-16
  • cbl2 grub2 2.06-16 on CBL Mariner 2.0
  • cbl2 grub2 2.06-16 on CBL-Mariner 2.0

✅ Updates Microsoft lists: 1 update

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

KB articleUpdateFixed build
—Security Update—

🧭 EchelonGraph on CVE-2024-56738

EchelonGraph score
5.3 MEDIUM
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

GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.

Published by MITRE Corporation, the CVE Numbering Authority that assigned CVE-2024-56738, 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)