CVE-2021-31174
Microsoft Excel Information Disclosure Vulnerability
MEDIUM
5.5
CVSS Score
Published: May 11, 2021 at 07:11 PM UTC
Updated: June 17, 2026 at 03:51 AM UTC
8 products affected across 1 vendorOffice365 AppsExcel
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Severity
MEDIUM5.5
Exploit prediction
EPSS 3%
Description
Microsoft Excel Information Disclosure 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 15.0.5345.1000, so it looks safe — our inference, not a vendor statement
Affected range stops below 16.0.5161.1000, so it looks safe — our inference, not a vendor statement
16.0.1 ≤ v < 16.0.10374.2000016.0.1
Affected range stops below 16.0.10374.20000, so it looks safe — our inference, not a vendor statement
Affected range stops below 15.0.5345.1000, so it looks safe — our inference, not a vendor statement
15.0.0 ≤ v < 15.0.5345.100015.0.0
Affected range stops below 15.0.5345.1000, so it looks safe — our inference, not a vendor statement
16.0.0 ≤ v < 16.0.5161.100016.0.0
Affected range stops below 16.0.5161.1000, so it looks safe — our inference, not a vendor statement
19.0.0 ≤ v < https://aka.ms/OfficeSecurityReleases19.0.0
Affected range stops below https://aka.ms/OfficeSecurityReleases, 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:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31174CVSS
5.5MEDIUMmicrosoft
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-125
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