Microsoft · Security update · February 14, 2023
KB5023038: February 2023 security update
KB5023038, released February 14, 2023, fixes 3 CVEs across 4 products. One of them is being exploited (CVE-2023-21529); 1 on CISA KEV. Patch Radar priority: Patch now.
Patch now1 on CISA KEVKnown ransomware use
CVEs closed
3
None rated Critical
Exploited
1
CVE-2023-21529
Exploitation more likely
1
Microsoft's assessment
Highest EPSS
0.5929
99th percentile
Priority of the 3 CVEs
Patch now 1
Urgent 1
High 1
Routine 0
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2023-21529 | Microsoft Exchange Server | Remote Code Execution | 8.8 | 0.5929 | KEVRansomwareExploited |
| Urgent | CVE-2023-21706 | Microsoft Exchange Server | Remote Code Execution | 8.8 | 0.0406 | More likely |
| High | CVE-2023-21710 | Microsoft Exchange Server | Remote Code Execution | 7.2 | 0.0787 | Exploitation Less Likely |
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1
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