Microsoft · Security update · April 13, 2021
KB4504721: April 2021 security update
KB4504721, released April 13, 2021, fixes 4 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
4
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0367
89th percentile
Priority of the 4 CVEs
Patch now 0
Urgent 0
High 3
Routine 1
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2021-28454 | Microsoft Office Excel | Remote Code Execution | 7.8 | 0.0335 | Exploitation Less Likely |
| High | CVE-2021-28449 | Microsoft Office Excel | Remote Code Execution | 7.8 | 0.0269 | Exploitation Less Likely |
| High | CVE-2021-28451 | Microsoft Office Excel | Remote Code Execution | 7.8 | 0.0250 | Exploitation Less Likely |
| Routine | CVE-2021-28456 | Microsoft Office Excel | Information Disclosure | 5.5 | 0.0367 | Exploitation Less Likely |
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