CVE-2018-8171
A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka "ASP.NET…
- 7.5HighCVSS base score
- 10.8%Exploitation in 30 daysEPSS · top 4.1% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
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.
Timeline
ID reserved
By microsoft
- 4 months later
· 4 months later
Published
- 6 years later
· 6 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)
- 10.8% · top 4.1% of all CVEs (10 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
- affected Web Pages 3.2.3 on Microsoft Visual Studio 2013 Update 5
- affected Web Pages 3.2.3 on Microsoft Visual Studio 2015 Update 3
- affected 1.0
- affected 1.1
- affected 2.0
- affected Microsoft Visual Studio 2013 Update 5
- affected Microsoft Visual Studio 2015 Update 3
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- NuGetMicrosoft.AspNetCore.IdentityGHSA-vhvh-528q-ff3p (opens in a new tab)
References
3
- 1041267 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- 104659 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8171 (opens in a new tab)x_refsource_CONFIRMx_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-2018-0698 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-vhvh-528q-ff3p (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-2018-8171)Record last updated .