CVE-2021-26419

Scripting Engine Memory Corruption Vulnerability

HIGH

7.5

CVSS Score

Published: May 11, 2021 at 07:11 PM UTC

Updated: June 17, 2026 at 03:43 AM UTC

9 products affected across 1 vendorInternet ExplorerWindows Server 2016Windows Server 2019

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Severity

HIGH7.5

Exploit prediction

EPSS 23%

Description

Scripting Engine Memory Corruption Vulnerability

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Internet Explorer · Microsoft

95%

1.0.0 ≤ v < 10.0.10240.189311.0.0 ≤ v < 10.0.14393.44011.0.0 ≤ v < 10.0.17134.22071.0.0 ≤ v < 10.0.17763.19351.0.0 ≤ v < 10.0.18363.15561.0.0 ≤ v < 10.0.19041.9821.0.0 ≤ v < 6.01.0.0 ≤ v < 6.0.6003.211171.0.0 ≤ v < 6.11.0.0 ≤ v < 6.1.7601.245971.0.0 ≤ v < 6.21.0.0 ≤ v < 6.2.9200.233471.0.0 ≤ v < 6.3.9600.200161.0.0 ≤ v < 6.3.9600.200171.0.0 11 9

Affected range stops below 10.0.10240.18931, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.14393.4401, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.17134.2207, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.17763.1935, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.18363.1556, so it looks safe — our inference, not a vendor statement

Affected range stops below 10.0.19041.982, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.0.6003.21117, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.1.7601.24597, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.2.9200.23347, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.3.9600.20016, so it looks safe — our inference, not a vendor statement

Affected range stops below 6.3.9600.20017, so it looks safe — our inference, not a vendor statement

microsoft-windows-10 (environment) · microsoft-windows-7 (environment) · microsoft-windows-8-1 (environment) · microsoft-windows-rt-8-1 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-server-2012 (environment) · microsoft-windows-server-2016 (environment) · microsoft-windows-server-2019 (environment)

Windows 10 · Microsoftdevice

80%

All versions

Windows 7 · Microsoftdevice

80%

All versions

Windows 8-1 · Microsoftdevice

80%

All versions

Windows Rt 8-1 · Microsoftdevice

80%

All versions