8.8
CVE-2026-21513
- EPSS 27.97%
- Published 10.02.2026 18:16:33
- Last modified 30.03.2026 13:28:07
- Source secure@microsoft.com
- CVE watchlists
- Open
Protection mechanism failure in MSHTML Framework allows an unauthorized attacker to bypass a security feature over a network.
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Microsoft ≫ Windows 10 1607 HwPlatformx64 Version < 10.0.14393.8868
Microsoft ≫ Windows 10 1607 HwPlatformx86 Version < 10.0.14393.8868
Microsoft ≫ Windows 10 1809 HwPlatformx64 Version < 10.0.17763.8389
Microsoft ≫ Windows 10 1809 HwPlatformx86 Version < 10.0.17763.8389
Microsoft ≫ Windows 10 21h2 HwPlatformarm64 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 21h2 HwPlatformx64 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 21h2 HwPlatformx86 Version < 10.0.19044.6937
Microsoft ≫ Windows 10 22h2 HwPlatformarm64 Version < 10.0.19045.6937
Microsoft ≫ Windows 10 22h2 HwPlatformx64 Version < 10.0.19045.6937
Microsoft ≫ Windows 10 22h2 HwPlatformx86 Version < 10.0.19045.6937
Microsoft ≫ Windows 11 23h2 HwPlatformarm64 Version < 10.0.22631.6649
Microsoft ≫ Windows 11 23h2 HwPlatformx64 Version < 10.0.22631.6649
Microsoft ≫ Windows 11 24h2 HwPlatformarm64 Version < 10.0.26100.7781
Microsoft ≫ Windows 11 24h2 HwPlatformx64 Version < 10.0.26100.7781
Microsoft ≫ Windows 11 25h2 HwPlatformarm64 Version < 10.0.26200.7781
Microsoft ≫ Windows 11 25h2 HwPlatformx64 Version < 10.0.26200.7781
Microsoft ≫ Windows Server 2012 Version-
Microsoft ≫ Windows Server 2012 Versionr2
Microsoft ≫ Windows Server 2016 SwEdition- HwPlatformx64 Version < 10.0.14393.8868
Microsoft ≫ Windows Server 2019 SwEdition- HwPlatformx64 Version < 10.0.17763.8389
Microsoft ≫ Windows Server 2022 SwEdition- HwPlatformx64 Version < 10.0.20348.4711
Microsoft ≫ Windows Server 2022 23h2 SwEdition- HwPlatformx64 Version < 10.0.25398.2149
Microsoft ≫ Windows Server 2025 HwPlatformx64 Version < 10.0.26100.32313
10.02.2026: CISA Known Exploited Vulnerabilities (KEV) Catalog
Microsoft Internet Explorer Protection Mechanism Failure Vulnerability
VulnerabilityMicrosoft Internet Explorer contains a protection mechanism failure vulnerability that could allow an unauthorized attacker to bypass a security feature over a network.
DescriptionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Required actions| Type | Source | Score | percentile |
|---|---|---|---|
| EPSS | FIRST.org | 27.97% | 0.964 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| secure@microsoft.com | 8.8 | 2.8 | 5.9 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
|
CWE-693 Protection Mechanism Failure
The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.