Microsoft security update for CVE-2025-0690
🔗 CVE IDs covered (1)
📋 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-2025-0690. This page also shows what EchelonGraph holds for CVE-2025-0690, 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 products5
- azl3 grub2 2.06-24 on Azure Linux 3.0
- azl3 grub2 2.06-25 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 2.06-15 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 article | Update | Fixed build |
|---|---|---|
| — | Security Update | 2.06-15 |
| — | Security Update | 2.06-25 |
🧭 EchelonGraph on CVE-2025-0690
- EchelonGraph score
- 6.1 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
The read command is used to read the keyboard input from the user, while reads it keeps the input length in a 32-bit integer value which is further used to reallocate the line buffer to accept the next character. During this process, with a line big enough it's possible to make this variable to overflow leading to a out-of-bounds write in the heap based buffer. This flaw may be leveraged to corrupt grub's internal critical data and secure boot bypass is not discarded as consequence.
Published by Red Hat, Inc., the CVE Numbering Authority that assigned CVE-2025-0690, 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).