CVE-2018-8171

mediumpriority · track · 34EPSS 0.108 · 96 %ileEUUS

grimoire priorityP1 · Urgent

Exploitable?

—

no known exploitation

Likely / severe?

10.8% (96th) EPSS

CVSS 5 · medium

Is it mine?

16 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · nvd · osv

EPSS · scored 2026-10-27

A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka "ASP.NET Security Feature Bypass Vulnerability." This affects ASP.NET, ASP.NET Core 1.1, ASP.NET Core 1.0, ASP.NET Core 2.0, ASP.NET MVC 5.2.

cvss

Technical severity, 0–10. One row per scoring source.

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:P/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:Nsecondary · OSV

v3.06.9mediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287USprimaryCWE-287US

affected products (16)

Products and version ranges known to be affected.

Microsoft ASP.NET≤ Web Pages 3.2.3 on Microsoft Visual Studio 2015 Update 3enisa_euvdEU
Microsoft ASP.NET≤ Web Pages 3.2.3 on Microsoft Visual Studio 2013 Update 5enisa_euvdEU
Microsoft ASP.NET Core≤ 1.1enisa_euvdEU
Microsoft ASP.NET Core≤ 1.0enisa_euvdEU
Microsoft ASP.NET Core≤ 2.0enisa_euvdEU
Microsoft ASP.NET MVC 5.2≤ Microsoft Visual Studio 2015 Update 3enisa_euvdEU
Microsoft ASP.NET MVC 5.2≤ Microsoft Visual Studio 2013 Update 5enisa_euvdEU
microsoft asp.net core= 1.0nvdUScpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*
microsoft asp.net core= 1.1nvdUScpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*
microsoft asp.net core= 2.0nvdUScpe:2.3:a:microsoft:asp.net_core:*:*:*:*:*:*:*:*
microsoft asp.net model view controller= 5.2nvdUScpe:2.3:a:microsoft:asp.net_model_view_controller:*:*:*:*:*:*:*:*
microsoft asp.net webpages= 3.2.3nvdUScpe:2.3:a:microsoft:asp.net_webpages:*:*:*:*:*:*:*:*
NuGet Microsoft.AspNetCore.Identity1.0.0 → 1.0.6osvUSpkg:nuget/Microsoft.AspNetCore.Identity
NuGet Microsoft.AspNetCore.Identity1.1.0 → 1.1.6osvUSpkg:nuget/Microsoft.AspNetCore.Identity
NuGet Microsoft.AspNetCore.Identity2.0.0 → 2.0.4osvUSpkg:nuget/Microsoft.AspNetCore.Identity
NuGet Microsoft.AspNetCore.Identity2.1.0 → 2.1.2osvUSpkg:nuget/Microsoft.AspNetCore.Identity

advisories (1)

Vendor and ecosystem advisories describing this.

GHSA-vhvh-528q-ff3pSecurity feature bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated2018-10-16ghsa · osvUS
A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka "ASP.NET Security Feature Bypass Vulnerability." This affects ASP.NET, ASP.NET Core 1.1, ASP.NET Core 1.0, ASP.NET Core 2.0, ASP.NET MVC 5.2.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd nvd osv NVD CVE.org MITRE

published 2018-07-11modified 2026-06-17

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+7709 more

references (9)

External citations — patches, advisories, analysis.

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