Microsoft Excel Security Feature Bypass

Added to KEV
2021-11-17
Federal due date
2021-12-01
Vendor
Microsoft
Product
Office
EPSS
97.2th percentile (score 0.355, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2021-42292

CISA short description

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

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.