Patch tracker / Products / ASP.NET Core 9.0

ASP.NET Core 9.0: vulnerabilities and security updates

Every CVE affecting ASP.NET Core 9.0 and the Microsoft update (KB) that fixes it, ranked by real-world risk. Actively exploited (CISA KEV) first, then EPSS exploit probability, on top of CVSS severity.

CVEs
4
Updates (KBs)
2
Actively exploited (KEV)
0
Critical Severity
2

CVEs affecting ASP.NET Core 9.0

CVESeverityCVSSEPSSStatus
CVE-2025-55315Critical9.966%-
CVE-2025-55248Critical9.966%-
CVE-2025-55247High7.366%-
CVE-2025-24070High7.01.0%-

Updates (KBs) for ASP.NET Core 9.0

UpdateReleasedSeverityCVSSEPSSCVEsStatus
KB50683322025-10-14Critical9.966%3-
KB50542302025-03-11High7.01.0%1-

Ranked across all products on the Microsoft patch tracker and the CVE and vulnerability management reference. Browse every product: product index.

Most searched on Senserva right now

KB5122876 install notes and severity KB5126052: the full CVE list KB5122882: patch details KB5123099: the full CVE list KB5120708 download and what it fixes KB5122871 install notes and severity KB5129235 install notes and severity KB5122878: patch details KB5120238 download and what it fixes KB5129238 download and what it fixes
New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
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