CVE-2017-0248
Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings…
- 7.5HighCVSS base score
- 5.5%Exploitation in 30 daysEPSS · top 7.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7 allow an attacker to bypass Enhanced Security Usage taggings when they present a certificate that is invalid for a specific use, aka ".NET Security Feature Bypass Vulnerability."
Timeline
ID reserved
By microsoft
- 8 months later
· 8 months later
Published
- 7 years later
· 7 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 5.5% · top 7.1% of all CVEs (9 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Microsoft Corporation · Microsoft .NET Framework
- affected Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7
Affected packages
19
From reviewed advisories of the GitHub Advisory Database.
- NuGetMicrosoft.AspNetCore.MvcGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.AbstractionsGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.ApiExplorerGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.CoreGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.CorsGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.DataAnnotationsGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.Formatters.JsonGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.Formatters.XmlGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.LocalizationGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.RazorGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.Razor.HostGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.TagHelpersGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.ViewFeaturesGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetMicrosoft.AspNetCore.Mvc.WebApiCompatShimGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetSystem.Net.HttpGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetSystem.Net.Http.WinHttpHandlerGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetSystem.Net.SecurityGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetSystem.Net.WebSockets.ClientGHSA-ch6p-4jcm-h8vh (opens in a new tab)
- NuGetSystem.Text.Encodings.WebGHSA-ch6p-4jcm-h8vh (opens in a new tab)
References
3
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 98117 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- 1038458 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2018-0579 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-ch6p-4jcm-h8vh (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2017-0248)Record last updated .