How severe is CVE-2019-0564?

CVE-2019-0564 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-0564 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0564?

CVE-2019-0564 affects Microsoft Asp.net Core. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-0564?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-0564 published?

CVE-2019-0564 was published on 2019-01-08 and last updated on 2026-06-17.

CVE-2019-0564

CVE-2019-0564 is a high-severity vulnerability in Microsoft Asp.net Core with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-19.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 8% (94th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-19
Affected product: Microsoft Asp.net Core
Published: 2019-01-08
Last modified: 2026-06-17

Description

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.

Frequently asked questions

What is CVE-2019-0564?: A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.
How severe is CVE-2019-0564?: CVE-2019-0564 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-0564 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-0564?: CVE-2019-0564 affects Microsoft Asp.net Core. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-0564?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-0564 published?: CVE-2019-0564 was published on 2019-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:asp.net_core:2.1:*:*:*:*:*:*:*

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