CVE-2026-0031HighMicrosoft CVSS 8.4CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Microsoft advisory for CVE-2026-0031

Published
May 31, 2026
Last Modified
—

🔗 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-2026-0031. This page also shows what EchelonGraph holds for CVE-2026-0031, 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 products1

  • cbl2 hyperv-daemons 5.15.200.1-1 on CBL Mariner 2.0

🧭 EchelonGraph on CVE-2026-0031

EchelonGraph score
8.4 HIGH
CISA KEV
Not listed
Fix status
A fix is referenced (a reference tagged "Patch", often a source commit), but no release containing it is confirmed — find the release that contains it; until it is applied, mitigate (WAF / firewall / segmentation).

Description from the CVE record (CVE.org), as published by its numbering authority

In multiple functions of mem_protect.c, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

Published by Android (associated with Google Inc. or Open Handset Alliance), the CVE Numbering Authority that assigned CVE-2026-0031, 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 (1)