CVE-2021-43256

HIGH

Microsoft Excel - Remote Code Execution

Title source: llm
STIX 2.1

Description

Microsoft Excel Remote Code Execution Vulnerability

References (1)

Core 1
Core References

Scores

CVSS v3 7.8
EPSS 0.0206
EPSS Percentile 79.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

Status published
Products (9)
microsoft/365_apps (2 CPE variants)
microsoft/excel 2013 sp1 (2 CPE variants)
microsoft/excel 2016 (2 CPE variants)
microsoft/excel_rt 2013 sp1
microsoft/office 2019 (2 CPE variants)
microsoft/office 2021 (2 CPE variants)
microsoft/office_long_term_servicing_channel 2021 (2 CPE variants)
microsoft/office_online_server
microsoft/office_web_apps 2013 sp1
Published Dec 15, 2021
Tracked Since Feb 18, 2026