How severe is CVE-2017-11883?

CVE-2017-11883 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-2017-11883 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11883?

CVE-2017-11883 primarily affects Microsoft Aspnetcore. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11883?

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-2017-11883 published?

CVE-2017-11883 was published on 2017-11-15 and last updated on 2026-06-17.

CVE-2017-11883

CVE-2017-11883 is a high-severity vulnerability in Microsoft Aspnetcore 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 9% (94th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Aspnetcore
Published: 2017-11-15
Last modified: 2026-06-17

Description

.NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".

Frequently asked questions

What is CVE-2017-11883?: .NET Core 1.0, 1.1, and 2.0 allow an unauthenticated attacker to remotely cause a denial of service attack against a .NET Core web application by improperly handling web requests, aka ".NET CORE Denial Of Service Vulnerability".
How severe is CVE-2017-11883?: CVE-2017-11883 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-2017-11883 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 9% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11883?: CVE-2017-11883 primarily affects Microsoft Aspnetcore. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11883?: 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-2017-11883 published?: CVE-2017-11883 was published on 2017-11-15 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:microsoft:aspnetcore:1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:aspnetcore:1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:aspnetcore:2.0:*:*:*:*:*:*:*

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