CVE-2021-26435CriticalCVSS 8.1

Windows Scripting Engine Memory Corruption Vulnerability

Published
September 14, 2021
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2021-26435 →

📋 Description

According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? Exploitation of the vulnerability requires that a user open a specially crafted file. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) containing a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file.

🎯 Affected products41

  • Windows 10 Version 1607 for 32-bit Systems
  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1809 for 32-bit Systems
  • Windows 10 Version 1809 for ARM64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1909 for 32-bit Systems
  • Windows 10 Version 1909 for ARM64-based Systems
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 2004 for 32-bit Systems
  • Windows 10 Version 2004 for ARM64-based Systems
  • Windows 10 Version 2004 for x64-based Systems
  • Windows 10 Version 20H2 for 32-bit Systems
  • Windows 10 Version 20H2 for ARM64-based Systems
  • Windows 10 Version 21H1 for 32-bit Systems
  • Windows 10 Version 21H1 for ARM64-based Systems
  • Windows 10 Version 21H1 for x64-based Systems
  • Windows 10 for 32-bit Systems
  • Windows 10 for x64-based Systems
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1
  • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
  • Windows Server 2008 for 32-bit Systems Service Pack 2
  • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
  • Windows Server 2008 for x64-based Systems Service Pack 2
  • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
  • Windows Server 2012
  • +11 more not shown

✅ Remediation

KB5005568 (Security Update) — fixed build 10.0.17763.2183 KB5005566 (Security Update) — fixed build 10.0.18363.1801 KB5005565 (Security Update) — fixed build 10.0.19043.1237 KB5005575 (Security Update) — fixed build 10.0.20348.230 KB5005565 (Security Update) — fixed build 10.0.19041.1237 KB5005565 (Security Update) — fixed build 10.0.19042.1237 KB5005569 (Security Update) — fixed build 10.0.10240.19060 KB5005573 (Security Update) — fixed build 10.0.14393.4651 KB5005633 (Monthly Rollup) — fixed build 6.1.7601.25712 KB5005615 (Security Only) — fixed build 6.1.7601.25712 KB5005613 (Monthly Rollup) — fixed build 6.3.9600.20120 KB5005627 (Security Only) — fixed build 6.3.9600.20120 KB5005606 (Monthly Rollup) — fixed build 6.0.6003.21218 KB5005623 (Monthly Rollup) — fixed build 6.2.9200.23462 KB5005607 (Security Only) — fixed build 6.2.9200.23462

🔗 References (27)