Vulnerability Intelligence Report
Microsoft Excel Security Feature Bypass Vulnerability
CVE-2021-42292
Microsoft Excel Security Feature Bypass Vulnerability
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
7.8
HIGH
Exploitability:1.9
Impact Score:5.9
EPSS Probability:31.95%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-357 ↗CWE-357 (via CISA KEV)
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise | 16.0.1 < https://aka.ms/OfficeSecurityReleases (affected) |
| Microsoft | Microsoft Excel 2013 Service Pack 1 | 15.0.0.0 < 15.0.5397.1001 (affected) |
| Microsoft | Microsoft Excel 2016 | 16.0.0.0 < 16.0.5239.1001 (affected) |
| Microsoft | Microsoft Office 2013 Service Pack 1 | 15.0.0 < 15.0.5397.1001 (affected) |
| Microsoft | Microsoft Office 2016 | 16.0.0 < 16.0.5239.1001 (affected) |
| Microsoft | Microsoft Office 2019 | 19.0.0 < https://aka.ms/OfficeSecurityReleases (affected) |
| Microsoft | Microsoft Office 2019 for Mac | 16.0.0 < 16.55.21111400 (affected) |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 < https://aka.ms/OfficeSecurityReleases (affected) |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 < 16.55.21111400 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Microsoft Corporation · Vendor · USA |
| Reserved | 2021-10-12T00:00:00 |
| Published | 2021-11-10T00:47:25 |
| Patch Date | 2021-11-09 |
| Last Updated | 2026-08-19T16:27:22 |
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