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CVE Vulnerability Details :
CVE-2026-21513
PUBLISHED
More InfoOfficial Page
Assigner-microsoft
Assigner Org ID-f38d906d-7342-40ea-92c1-6c4a2c6478c8
View Known Exploited Vulnerability (KEV) details
Published At-10 Feb, 2026 | 17:51
Updated At-13 Feb, 2026 | 22:30
Rejected At-
▼CVE Numbering Authority (CNA)
MSHTML Framework Security Feature Bypass Vulnerability

Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network.

Affected Products
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 1607
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.14393.0 before 10.0.14393.8868 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 1809
Platforms
  • 32-bit Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.17763.0 before 10.0.17763.8389 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 21H2
Platforms
  • 32-bit Systems
  • ARM64-based Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.19044.0 before 10.0.19044.6937 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 10 Version 22H2
Platforms
  • 32-bit Systems
  • ARM64-based Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.19045.0 before 10.0.19045.6937 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 11 version 22H3
Platforms
  • ARM64-based Systems
Versions
Affected
  • From 10.0.22631.0 before 10.0.22631.6649 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 11 Version 23H2
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.22631.0 before 10.0.22631.6649 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 11 Version 24H2
Platforms
  • ARM64-based Systems
  • x64-based Systems
Versions
Affected
  • From 10.0.26100.0 before 10.0.26100.7840 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 11 Version 25H2
Versions
Affected
  • From 10.0.26200.0 before 10.0.26200.7840 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 11 version 26H1
Platforms
  • ARM64-based Systems
Versions
Affected
  • From 10.0.28000.0 before 10.0.28000.1575 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows 11 Version 26H1
Versions
Affected
  • From 10.0.28000.0 before 10.0.28000.1575 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2012
Platforms
  • x64-based Systems
Versions
Affected
  • From 6.2.9200.0 before 6.2.9200.25923 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2012 (Server Core installation)
Platforms
  • x64-based Systems
Versions
Affected
  • From 6.2.9200.0 before 6.2.9200.25923 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2012 R2
Platforms
  • x64-based Systems
Versions
Affected
  • From 6.3.9600.0 before 6.3.9600.23022 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2012 R2 (Server Core installation)
Platforms
  • x64-based Systems
Versions
Affected
  • From 6.3.9600.0 before 6.3.9600.23022 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2016
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.14393.0 before 10.0.14393.8868 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2016 (Server Core installation)
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.14393.0 before 10.0.14393.8868 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2019
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.17763.0 before 10.0.17763.8389 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2019 (Server Core installation)
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.17763.0 before 10.0.17763.8389 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2022
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.20348.0 before 10.0.20348.4773 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2022, 23H2 Edition (Server Core installation)
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.25398.0 before 10.0.25398.2149 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2025
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.26100.0 before 10.0.26100.32370 (custom)
Vendor
Microsoft CorporationMicrosoft
Product
Windows Server 2025 (Server Core installation)
Platforms
  • x64-based Systems
Versions
Affected
  • From 10.0.26100.0 before 10.0.26100.32370 (custom)
Problem Types
TypeCWE IDDescription
CWECWE-693CWE-693: Protection Mechanism Failure
Type: CWE
CWE ID: CWE-693
Description: CWE-693: Protection Mechanism Failure
Metrics
VersionBase scoreBase severityVector
3.18.8HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Version: 3.1
Base score: 8.8
Base severity: HIGH
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21513
vendor-advisory
patch
Hyperlink: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21513
Resource:
vendor-advisory
patch
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
kev
dateAdded:
2026-02-10
reference:
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21513
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
CVE-2026-21513 added to CISA KEV2026-02-10 00:00:00
Event: CVE-2026-21513 added to CISA KEV
Date: 2026-02-10 00:00:00
Replaced By
Rejected Reason
References
HyperlinkResource
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21513
government-resource
Hyperlink: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-21513
Resource:
government-resource
Details not found