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HomeCVEsCVE-2021-42292

CVE-2021-42292

Published: January 26, 2026
Last updated:1 day ago (January 26, 2026)
Exploit: YesZero-day: YesPatch: YesTrend: Neutral
TL;DR
Updated January 26, 2026

CVE-2021-42292 is a high severity vulnerability with a CVSS score of 7.8. Exploits are available; patches have been released and should be applied urgently. This is classified as a zero-day vulnerability.

Key Points
  • 1High severity (CVSS 7.8/10)
  • 2EPSS: 19.00% - elevated likelihood of exploitation
  • 3Public exploits are available
  • 4Vendor patches are available
  • 5Strobes Priority Score: 814/1000 (High)
  • 6Affects products from: Microsoft
Severity Scores
CVSS v37.8
CVSS v26.8
Priority Score814.0
EPSS Score19.0
High
Exploitation LikelihoodMedium
19.00%EPSS

Moderate probability of exploitation

Schedule patching within weeks
19.00%
EPSS
7.8
CVSS
Yes
Exploit
Yes
Patch
High Priority
high EPSS • exploit exists

EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.

Description

A security feature bypass vulnerability in Microsoft Excel would allow a local user to perform arbitrary code execution.

CVSS v3 Breakdown
Attack Vector:Local
Attack Complexity:Local
Privileges Required:Network
User Interaction:Required
Scope:Unchanged
Confidentiality:High
Integrity:High
Availability:High
Exploit References
Cisa.govGitHubGitHub
Patch References
[email protected]Zeroday CZ
Trend Analysis
Neutral
Vulnerable Products
VendorProduct
MicrosoftOffice
MicrosoftExcel
MicrosoftOffice Long Term Servicing Channel
Microsoft365 Apps
Advisories
CISA: A security feature bypass vulnerability in Microsoft Excel would allow a local user to perform arbitrary code execution.
GitHub AdvisoryNVD
Cite This Page
APA Format
Strobes VI. (2026). CVE-2021-42292 - CVE Details and Analysis. Strobes VI. Retrieved January 27, 2026, from https://vi.strobes.co/cve/CVE-2021-42292
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Please cite this page when referencing data from Strobes VI. Proper attribution helps support our vulnerability intelligence research.