High severity7.8NVD Advisory· Published Dec 15, 2021· Updated May 19, 2026
CVE-2021-43256
CVE-2021-43256
Description
Microsoft Excel Remote Code Execution Vulnerability
Affected products
20cpe:2.3:a:microsoft:excel:2013:sp1:*:*:rt:*:*:*+ 6 more
- cpe:2.3:a:microsoft:excel:2013:sp1:*:*:rt:*:*:*range: 15.0.0.0
- cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:excel:2013:sp1:*:*:*:*:x86:*
- cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:excel:2016:*:*:*:*:*:x86:*
- cpe:2.3:a:microsoft:excel_rt:2013:sp1:*:*:*:*:*:*
- (no CPE)
cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*range: 19.0.0
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:x86:*
- cpe:2.3:a:microsoft:office:2021:*:*:*:ltsc:*:*:*range: https://aka.ms/OfficeSecurityReleases
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:*:*range: 16.0.1
- cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:x64:*
- cpe:2.3:a:microsoft:office_long_term_servicing_channel:2021:*:*:*:*:*:x86:*
- cpe:2.3:a:microsoft:office_online_server:-:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:microsoft:office_web_apps:2013:sp1:*:*:*:*:*:*
- cpe:2.3:a:microsoft:office_web_apps_server:2013:sp1:*:*:*:*:*:*range: 15.0.1
Patches
Vulnerability mechanics
References
1- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43256nvdPatchVendor Advisory
News mentions
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