CVE-2017-0249

HIGHNVD 7.37.3—

7.3

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

CVSS v3: 7.3
EG Score: 7.3(medium)
EPSS: 90.6%
KEV: Not listed

Published

May 12, 2017

Last Modified

May 13, 2026

References (2)

secure@microsofthttps://github.com/aspnet/Announcements/issues/239
af854a3a-2127-422b-91ae-364da2661108https://github.com/aspnet/Announcements/issues/239

Affected Packages

(20 across 1 ecosystem)

NuGet(20)

Package	Vulnerable range	Fixed in	Dependents
DisCatSharp	9.5.8 ... 9.8.3-nightly-00149 (125 versions)	—	—
Microsoft.AspNetCore.Mvc	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Abstractions	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.ApiExplorer	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Core	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Cors	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.DataAnnotations	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Formatters.Json	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Formatters.Xml	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Localization	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Razor	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.Razor.Host	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.TagHelpers	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.ViewFeatures	1.1.0, 1.1.1, 1.1.2	1.1.3	—
Microsoft.AspNetCore.Mvc.WebApiCompatShim	1.1.0, 1.1.1, 1.1.2	1.1.3	—
System.Net.Http	4.3.1	4.3.2	—
System.Net.Http.WinHttpHandler	4.3.0	4.3.1	—
System.Net.Security	4.3.0	4.3.1	—
System.Net.WebSockets.Client	4.3.0	4.3.1	—
System.Text.Encodings.Web	4.3.0	4.3.1	—

Data Freshness Timeline

(refreshed 11× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:44 UTCepss_batch
2026-05-23 00:10 UTCEG score recompute
2026-05-22 13:28 UTCEG score recompute
2026-05-20 22:37 UTCepss_batch
2026-05-20 22:37 UTCepss_batch
2026-05-20 22:37 UTCepss_batch
2026-05-20 11:21 UTCepss_batch
2026-05-20 11:21 UTCepss_batch
2026-05-18 21:30 UTCepss_batch
2026-05-18 21:30 UTCepss_batch
2026-05-18 21:30 UTCepss_batch

Frequently asked(5)

What is CVE-2017-0249?

CVE-2017-0249 is a high vulnerability published on May 12, 2017. An elevation of privilege vulnerability exists when the ASP.NET Core fails to properly sanitize web requests.

When was CVE-2017-0249 disclosed?

CVE-2017-0249 was first published in the National Vulnerability Database on May 12, 2017, with the most recent update on May 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2017-0249 actively exploited?

CVE-2017-0249 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 90.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2017-0249?

CVE-2017-0249 has a CVSS v3 base score of 7.3 (NVD).

How do I remediate CVE-2017-0249?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-0249, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-0249

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CVE-2017-0249

📅 Published

🔄 Last Modified

🔗 References (2)