ASP.NET
CVE-2018-8171 — ASP.NET Security Feature Bypass Vulnerability
Executive Summary
A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated. An attacker who successfully exploited this vulnerability could try an infinite number of authentication attempts. The update addresses the vulnerability by validating the number of incorrect login attempts.
Overview
Important
MS Severity
Not Exploited
MS Exploit Status
Exploitation Unlikely
MS Exploit Likelihood
EPSS Score
0.09832
probability of exploitation in the next 30 days
0.95121 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
7 affected products
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| ASP.NET Core 1.0 | Commit (Security Update) |
Important | Security Feature Bypass | Unknown |
| ASP.NET Core 1.1 | Commit (Security Update) |
Important | Security Feature Bypass | Unknown |
| ASP.NET Core 2.0 | Commit (Security Update) |
Important | Security Feature Bypass | Unknown |
| ASP.NET MVC 5.2 on Microsoft Visual Studio 2013 Update 5 | 4339279 (Security Update) |
Important | Security Feature Bypass | Maybe |
| ASP.NET MVC 5.2 on Microsoft Visual Studio 2015 Update 3 | 4339279 (Security Update) |
Important | Security Feature Bypass | Maybe |
| ASP.NET Web Pages 3.2.3 on Microsoft Visual Studio 2013 Update 5 | 4339279 (Security Update) |
Important | Security Feature Bypass | Maybe |
| ASP.NET Web Pages 3.2.3 on Microsoft Visual Studio 2015 Update 3 | 4339279 (Security Update) |
Important | Security Feature Bypass | Maybe |
Patches
2 patches
| Article | Type | Restart |
|---|---|---|
Commit |
Security Update | Unknown |
4339279 |
Security Update | Maybe |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
References
On This Page