CVE-2026-62886HighMicrosoft CVSS 7.8CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Microsoft security update for CVE-2026-62886

Published
August 14, 2026
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2026-62886 →

📋 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-2026-62886. This page also shows what EchelonGraph holds for CVE-2026-62886, 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 products62

  • .NET 10.0 runtime installed on Windows
  • .NET 8.0 runtime installed on Windows
  • .NET 9.0 runtime installed on Windows
  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 Version 1607 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows 10 version 1607
  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2016
  • Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2019
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.7.2 on Windows 10 version 1809
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 1809 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 21H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 Version 22H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 1809
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 21H2
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows 10 version 22H2
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2019
  • Microsoft .NET Framework 3.5 AND 4.8 on Windows Server 2022
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for 32-bit Systems
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for ARM64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 21H2 for x64-based Systems
  • Microsoft .NET Framework 3.5 AND 4.8.1 on Windows 10 Version 22H2 for 32-bit Systems
  • +32 more not shown

✅ Updates Microsoft lists: 25 KB articles and 6 other updates

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

KB articleUpdateFixed build
KB5127660Security Update2.0.50727.8987 AND 3.0.30729.8982
KB5126044Security Update4.7.4145.0
KB5126049Security Update4.8.4806.0
KB5126051Security Update4.8.4806.0
KB5126047Security Update4.8.4806.0
KB5127666Security Update2.0.50727.9073 AND 3.0.30729.9070 AND 4.7.4150.0
KB5127685Security Update2.0.50727.9073 AND 3.0.30729.9070 AND 4.8.4811.0
KB5127693Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
KB5126043Security Update2.0.50727.9070 & 3.0.30729.9068 & 4.7.4145.0
KB5126421Security Update2.0.50727.9070 & 3.0.30729.9068 & 4.8.4806.0
KB5126046Security Update2.0.50727.9183 & 3.0.30729.9169 & 4.8.4806.0
KB5126421Security Update2.0.50727.9183 & 3.0.30729.9169 & 4.8.9346.0
KB5126052Security Update2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
—Security Update2.0.50727.9183 & 3.0.30729.9169
KB5126053Security Update4.8.9347.0
KB5127664Security Update2.0.50727.8987 AND 3.0.30729.8982
KB5126045Security Update4.7.4145.0
KB5126868Security Update2.0.50727.8987 AND 3.0.30729.8982 AND 4.7.4150.0
KB5127687Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.4811.0
KB5127690Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
KB5123099Security Update2.0.50727.8984 & 3.0.30729.8980 & 4.7.4145.0
KB5126424Security Update2.0.50727.9183 & 3.0.30729.9169 & 4.8.9347.0
—Security Update18.8.3
—Security Update10.0.11
—Security Update8.0.30
—Security Update9.0.19
—Security Update17.14.38
KB5127696Security Update2.0.50727.9188 AND 3.0.30729.9171
KB5127683Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.4811.0
KB5127689Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
KB5127692Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.9363.0
KB5127694Security Update2.0.50727.9188 AND 3.0.30729.9171 AND 4.8.10008.0

🧭 EchelonGraph on CVE-2026-62886

EchelonGraph score
7.8 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

Integer overflow or wraparound in .NET allows an unauthorized attacker to elevate privileges locally.

Published by Microsoft Corporation, the CVE Numbering Authority that assigned CVE-2026-62886, 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 (58)