CVE-2021-34480: Scripting Engine Memory Corruption Vulnerability

Published Aug 10, 2021
·
Updated

Scripting Engine Memory Corruption Vulnerability

Affected Software

44 affected componentsFixes available
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
Microsoft Windows 7<6.1.7601.25685, <1.001
6.1.7601.256851.001
Microsoft Windows 8.1 for x64-based systems<6.3.9600.20094, <1.001
6.3.9600.200941.001
Microsoft Windows 10=1607
10.0.14393.4583
Microsoft Windows 7<6.1.7601.25685, <1.001
6.1.7601.256851.001
Microsoft Windows Server 2016<10.0.14393.4583
10.0.14393.4583
Microsoft Windows Server 2012<6.2.9200.23435, <1.001
6.2.9200.234351.001
Microsoft Windows Server 2008 R2<6.1.7601.25685, <1.001
6.1.7601.256851.001
Microsoft Windows RT 8.1<6.3.9600.20094
6.3.9600.20094
Microsoft Windows Server 2012 R2<6.3.9600.20094, <1.001
6.3.9600.200941.001
Microsoft Windows 8.1 for 32-bit systems<6.3.9600.20094, <1.001
6.3.9600.200941.001
Microsoft Windows 10=20H2
10.0.19042.1165
Microsoft Windows 10=1607
10.0.14393.4583
Microsoft Windows 10<10.0.10240.19022
10.0.10240.19022
Microsoft Windows 10=2004
10.0.19041.1165
Microsoft Windows 10=21H1
10.0.19043.1165
Microsoft Windows 10=2004
10.0.19041.1165
Microsoft Windows 10<10.0.10240.19022
10.0.10240.19022
Microsoft Windows 10=20H2
10.0.19042.1165
Microsoft Windows 10=2004
10.0.19041.1165
Microsoft Windows 10=1809
10.0.17763.2114
Microsoft Windows 10=1909
10.0.18363.1734
Microsoft Windows 10=21H1
10.0.19043.1165
Microsoft Windows 10=1909
10.0.18363.1734
Microsoft Windows 10=1909
10.0.18363.1734
Microsoft Windows 10=1809
10.0.17763.2114
Microsoft Windows 10=21H1
10.0.19043.1165
Microsoft Windows 10=20H2
10.0.19042.1165
Microsoft Windows 10=1809
10.0.17763.2114
Microsoft Windows Server 2019<10.0.17763.2114
10.0.17763.2114

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.1.7601.25685Fixed in 1.001Patch KB5005036
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20094Fixed in 1.001Patch KB5005036
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.4583Patch KB5005043
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.2.9200.23435Fixed in 1.001Patch KB5005036
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20094Patch KB5005076
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19042.1165Patch KB5005033
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.10240.19022Patch KB5005040
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19041.1165Patch KB5005033
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19043.1165Patch KB5005033
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.2114Patch KB5005030
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.18363.1734Patch KB5005031

Event History

Aug 10, 2021
CVE Published
via Microsoft·07:00 AM
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionSeverity
Updated
via Microsoft·02:00 PM
SeverityAffected Software
Aug 12, 2021
CVE Published
via MITRE·06:11 PM
Data Sourced
via MITRE·06:11 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2021-34480?

CVE-2021-34480 has a severity rating of 'Critical' due to its potential to allow remote code execution.

2

How do I fix CVE-2021-34480?

To fix CVE-2021-34480, install the latest security updates provided by Microsoft for affected Windows versions.

3

Which Windows versions are affected by CVE-2021-34480?

CVE-2021-34480 affects multiple versions of Windows, including Windows 10, Windows 7, Windows 8.1, and Windows Server editions.

4

What are the risks associated with CVE-2021-34480 exploitation?

Exploitation of CVE-2021-34480 can lead to remote code execution, which may allow attackers to gain control over the affected system.

5

Is a workaround available for CVE-2021-34480?

Currently, there are no known workarounds for CVE-2021-34480; updating is the recommended response.

Contact

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