CVE-2021-40442
Microsoft Excel Remote Code Execution Vulnerability
HIGH
7.8
CVSS Score
Published: November 10, 2021 at 12:46 AM UTC
Updated: August 19, 2026 at 05:17 PM UTC
9 products affected across 1 vendorOffice365 AppsOffice 2021
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Severity
HIGH7.8
Exploit prediction
EPSS 2%
Description
Microsoft Excel Remote Code Execution Vulnerability
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
16.0.1 ≤ v < https://aka.ms/OfficeSecurityReleases16.0.1
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.5397.1001, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.5239.1001, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.55.21111400, so it looks safe — our inference, not a vendor statement
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.55.21111400, so it looks safe — our inference, not a vendor statement
Affected range stops below https://aka.ms/OfficeSecurityReleases, so it looks safe — our inference, not a vendor statement
16.0.1 ≤ v < 16.0.10380.2000016.0.1
Affected range stops below 16.0.10380.20000, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.5397.1001, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.5397.1001, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (2)
PatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40442Vendor AdvisoryPatch
Source: cverecord
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40442CVSS
7.8HIGHmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
NVD-CWE-noinfo
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