CVE-2021-40442: Microsoft Excel Remote Code Execution Vulnerability
Microsoft Excel Remote Code Execution Vulnerability
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.5397.1001Patch KB5002072 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.5397.1001Patch KB5002065 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.55.21111400 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5239.1001Patch KB5002056 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10380.20000Patch KB5002053 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in https://aka.ms/OfficeSecurityReleases - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 15.0.5397.1001Patch KB5002063
Event History
Frequently Asked Questions
What is the severity of CVE-2021-40442?
CVE-2021-40442 has been rated as critical due to its potential for remote code execution.
How do I fix CVE-2021-40442?
To mitigate CVE-2021-40442, users should apply the latest security updates from Microsoft for affected software versions.
Which Microsoft products are affected by CVE-2021-40442?
CVE-2021-40442 affects various versions of Microsoft Excel, Office 2019, 2021, and Microsoft Office Online Server.
What type of vulnerability is CVE-2021-40442?
CVE-2021-40442 is classified as a remote code execution vulnerability.
Can CVE-2021-40442 be exploited through email attachments?
Yes, CVE-2021-40442 can be exploited through malicious email attachments that execute code when opened.