CVE-2026-26127HighMicrosoft CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

Microsoft security update for CVE-2026-26127

Published
May 31, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-26127 →

📋 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-2026-26127. This page also shows what EchelonGraph holds for CVE-2026-26127, 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 products8

  • .NET 10.0 installed on Linux
  • .NET 10.0 installed on Mac OS
  • .NET 10.0 installed on Windows
  • .NET 9.0 installed on Linux
  • .NET 9.0 installed on Mac OS
  • .NET 9.0 installed on Windows
  • Microsoft.Bcl.Memory 10.0
  • Microsoft.Bcl.Memory 9.0

✅ Updates Microsoft lists: 4 updates

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

KB articleUpdateFixed build
—Security Update10.0.4
—Security Update10.0.4
—Security Update9.0.14
—Security Update9.0.14

🧭 EchelonGraph on CVE-2026-26127

EchelonGraph score
7.5 HIGH
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

Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2026-26127, 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 (6)