CVE-2017-0249

High severity vulnerability that affects Microsoft.AspNetCore.Mvc

7.3 HighFix available

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

4.25%Down 0.6 points since Apr 14, 2021

What each source reports

NVD Score used 7.3

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

Record: CVE-2017-0249
CVSS 3.0: 7.3 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

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

Record: CVE-2017-0249
Updated: 2026-11-02

EUVDEUVD-2018-0665 No score

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

Record: EUVD-2018-0665
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qhqf-ghgh-x2m4 7.3

High severity vulnerability that affects Microsoft.AspNetCore.Mvc

See https://nvd.nist.gov/vuln/detail/CVE-2017-0249 & https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0249

Record: GHSA-qhqf-ghgh-x2m4
CVSS 3.0: 7.3 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness: CWE-20
Updated: 2026-11-02

OSVGHSA-qhqf-ghgh-x2m4 7.3

High severity vulnerability that affects Microsoft.AspNetCore.Mvc

See https://nvd.nist.gov/vuln/detail/CVE-2017-0249 & https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0249

Record: GHSA-qhqf-ghgh-x2m4
CVSS 3.0: 7.3 HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness: CWE-20
Updated: 2026-11-02

Affected products

Show 8 moreShow less

Affected packages

Affected packages
Package	Affected	Fixed
`Microsoft.AspNetCore.Mvc` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Core` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Core` NuGet	1.1.0 up to 1.1.3	1.1.3
`System.Net.Http` NuGet	4.1.1 to 4.1.1	4.1.2
`System.Net.Http` NuGet	4.3.1 to 4.3.1	4.3.2
`System.Text.Encodings.Web` NuGet	4.0.0 to 4.0.0	4.0.1
`System.Text.Encodings.Web` NuGet	4.3.0 to 4.3.0	4.3.1
`System.Net.Http.WinHttpHandler` NuGet	4.0.0 to 4.0.0	4.0.1
`System.Net.Http.WinHttpHandler` NuGet	4.3.0 to 4.3.0	4.3.1

Show 68 moreShow less

Affected packages
Package	Affected	Fixed
`System.Net.Security` NuGet	4.0.0 to 4.0.0	4.0.1
`System.Net.Security` NuGet	4.3.0 to 4.3.0	4.3.1
`System.Net.WebSockets.Client` NuGet	4.0.0 to 4.0.0	4.0.1
`System.Net.WebSockets.Client` NuGet	4.3.0 to 4.3.0	4.3.1
`Microsoft.AspNetCore.Mvc.Abstractions` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Abstractions` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.ApiExplorer` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.ApiExplorer` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.Cors` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Cors` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.DataAnnotations` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.DataAnnotations` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.Formatters.Json` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Formatters.Json` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.Formatters.Xml` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Formatters.Xml` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.Localization` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Localization` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.Razor.Host` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Razor.Host` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.Razor` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.Razor` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.TagHelpers` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.TagHelpers` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.ViewFeatures` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.ViewFeatures` NuGet	1.1.0 up to 1.1.3	1.1.3
`Microsoft.AspNetCore.Mvc.WebApiCompatShim` NuGet	1.0.0 up to 1.0.4	1.0.4
`Microsoft.AspNetCore.Mvc.WebApiCompatShim` NuGet	1.1.0 up to 1.1.3	1.1.3
`DisCatSharp` NuGet	through 9.8.3	None known
`Microsoft.AspNetCore.Mvc` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Core` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Core` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`System.Net.Http` NuGet	4.1.1 up to 4.1.2	4.1.2
`System.Net.Http` NuGet	4.3.1 up to 4.3.2	4.3.2
`System.Text.Encodings.Web` NuGet	4.0.0 up to 4.0.1	4.0.1
`System.Text.Encodings.Web` NuGet	4.3.0 up to 4.3.1	4.3.1
`System.Net.Http.WinHttpHandler` NuGet	4.0.0 up to 4.0.1	4.0.1
`System.Net.Http.WinHttpHandler` NuGet	4.3.0 up to 4.3.1	4.3.1
`System.Net.Security` NuGet	4.0.0 up to 4.0.1	4.0.1
`System.Net.Security` NuGet	4.3.0 up to 4.3.1	4.3.1
`System.Net.WebSockets.Client` NuGet	4.0.0 up to 4.0.1	4.0.1
`System.Net.WebSockets.Client` NuGet	4.3.0 up to 4.3.1	4.3.1
`Microsoft.AspNetCore.Mvc.Abstractions` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Abstractions` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.ApiExplorer` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.ApiExplorer` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Cors` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Cors` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.DataAnnotations` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.DataAnnotations` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Formatters.Json` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Formatters.Json` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Formatters.Xml` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Formatters.Xml` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Localization` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Localization` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Razor.Host` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Razor.Host` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.Razor` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.Razor` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.TagHelpers` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.TagHelpers` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.ViewFeatures` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.ViewFeatures` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`Microsoft.AspNetCore.Mvc.WebApiCompatShim` NuGet	1.0.0 up to 1.0.4, plus listed versions 1.0.11.0.21.0.3	1.0.4
`Microsoft.AspNetCore.Mvc.WebApiCompatShim` NuGet	1.1.0 up to 1.1.3, plus listed versions 1.1.11.1.2	1.1.3
`DisCatSharp` NuGet	through 9.8.3, plus listed versions 9.5.89.5.8-nightly-000039.5.8-nightly-000049.5.8-nightly-001839.5.8-nightly-00184 Show 45 moreShow less 9.6.09.6.0-nightly-000059.6.0-nightly-000089.6.0-nightly-000109.6.0-nightly-000119.6.19.6.1-nightly-000129.6.1-nightly-000159.6.1-nightly-000169.6.1-nightly-000179.6.1-nightly-000189.6.29.6.2-nightly-000199.6.2-nightly-000209.6.2-nightly-000229.6.2-nightly-000239.6.2-nightly-000259.6.2-nightly-000269.6.2-nightly-000279.6.2-nightly-000289.6.2-nightly-000299.6.2-nightly-000309.6.3-nightly-000349.6.3-nightly-000359.6.3-nightly-000369.6.3-nightly-000379.6.3-nightly-000389.6.3-nightly-000399.6.3-nightly-000419.6.3-nightly-000429.6.3-nightly-000439.6.3-nightly-000449.6.3-nightly-000459.6.3-nightly-000469.6.3-nightly-000479.6.3-nightly-000489.6.3-nightly-000499.6.3-nightly-000509.6.3-nightly-000519.7.09.7.0-nightly-000549.7.0-nightly-000559.7.0-nightly-000569.7.0-nightly-000579.7.0-nightly-00058	None known

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, products	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2017-0249 is a high vulnerability (CVSS 7.3) in Microsoft Asp.net Core, published May 12, 2017. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 4.25%, the 91st percentile. Fixed in Microsoft.AspNetCore.Mvc 1.1.3.

References

This page doesn't list everything

Left out here: 74 versions. The JSON record has them.