How severe is CVE-2017-0249?

CVE-2017-0249 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2017-0249 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-0249?

CVE-2017-0249 primarily affects Microsoft Asp.net Model View Controller. In total, 101 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-0249?

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-2017-0249 published?

CVE-2017-0249 was published on 2017-05-12 and last updated on 2026-06-17.

CVE-2017-0249

CVE-2017-0249 is a high-severity vulnerability in Microsoft Asp.net Model View Controller with a CVSS 3.x base score of 7.3. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.5
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Asp.net Model View Controller
Published: 2017-05-12
Last modified: 2026-06-17

Description

An elevation of privilege vulnerability exists when the ASP.NET Core fails to properly sanitize web requests.

Frequently asked questions

What is CVE-2017-0249?: An elevation of privilege vulnerability exists when the ASP.NET Core fails to properly sanitize web requests.
How severe is CVE-2017-0249?: CVE-2017-0249 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2017-0249 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-0249?: CVE-2017-0249 primarily affects Microsoft Asp.net Model View Controller. In total, 101 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-0249?: 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-2017-0249 published?: CVE-2017-0249 was published on 2017-05-12 and last updated on 2026-06-17.

References

https://github.com/aspnet/Announcements/issues/239

Affected products (101)

cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.0.3:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.1:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:asp.net_model_view_controller:1.1.2:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.0.3:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.abstractions:1.1.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.0.3:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.apiexplorer:1.1.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.0.3:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.cors:1.1.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.0.3:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.dataannotations:1.1.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.0:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.1:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.2:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.0.3:*:*:*:*:asp.net:*:*
cpe:2.3:a:microsoft:microsoft.aspnetcore.mvc.formatters.json:1.1.0:*:*:*:*:asp.net:*:*

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