HIGH
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
Published Jul 11, 2018
7.5
HIGHCVSS 3.0
EPSS 10.48%
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.
Affected products
-
- Version Web Pages 3.2.3 on Microsoft Visual Studio 2013 Update 5StatusaffectedConstraints-
- Version Web Pages 3.2.3 on Microsoft Visual Studio 2015 Update 3StatusaffectedConstraints-
- Version
-
- Version 1.0StatusaffectedConstraints-
- Version 1.1StatusaffectedConstraints-
- Version 2.0StatusaffectedConstraints-
- Version
-
- Version Microsoft Visual Studio 2013 Update 5StatusaffectedConstraints-
- Version Microsoft Visual Studio 2015 Update 3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Microsoft | Asp.net | n/a |
| ||||||||||||
| Microsoft | ASP.NET Core | n/a |
| ||||||||||||
| Microsoft | Asp.net Mvc 5.2 | n/a |
|
OR
- 1.0
- 1.1
- 2.0
- 5.2
- 3.2.3
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
10.48% 0.10480
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.10480
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (59 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 10.48% (0.10480) | 95.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 9.83% (0.09832) | 94.93th | v5 (v2026.06.15) |
| Jun 13, 2026 | 3.72% (0.03725) | 88.29th | v4 (v2025.03.14) |
| May 11, 2026 | 7.76% (0.07756) | 91.99th | v4 (v2025.03.14) |
| May 6, 2026 | 14.57% (0.14572) | 94.50th | v4 (v2025.03.14) |
| Apr 18, 2026 | 21.80% (0.21801) | 95.77th | v4 (v2025.03.14) |
| Apr 2, 2026 | 24.33% (0.24334) | 96.07th | v4 (v2025.03.14) |
| Mar 4, 2026 | 19.44% (0.19441) | 95.26th | v4 (v2025.03.14) |
| Mar 1, 2026 | 11.82% (0.11825) | 93.61th | v4 (v2025.03.14) |
| Feb 4, 2026 | 16.31% (0.16315) | 94.66th | v4 (v2025.03.14) |
| Feb 1, 2026 | 11.82% (0.11825) | 93.57th | v4 (v2025.03.14) |
| Jan 4, 2026 | 16.83% (0.16829) | 94.73th | v4 (v2025.03.14) |
| Jan 1, 2026 | 12.22% (0.12223) | 93.65th | v4 (v2025.03.14) |
| Dec 4, 2025 | 17.23% (0.17234) | 94.76th | v4 (v2025.03.14) |
| Dec 1, 2025 | 12.54% (0.12538) | 93.71th | v4 (v2025.03.14) |
| Nov 29, 2025 | 17.23% (0.17234) | 94.76th | v4 (v2025.03.14) |
| Nov 21, 2025 | 14.85% (0.14852) | 94.25th | v4 (v2025.03.14) |
| Nov 18, 2025 | 3.23% (0.03232) | 85.84th | v4 (v2025.03.14) |
| Nov 4, 2025 | 14.85% (0.14852) | 94.23th | v4 (v2025.03.14) |
| Nov 2, 2025 | 10.70% (0.10700) | 93.02th | v4 (v2025.03.14) |
| Nov 1, 2025 | 8.17% (0.08172) | 91.83th | v4 (v2025.03.14) |
| Oct 4, 2025 | 11.50% (0.11501) | 93.33th | v4 (v2025.03.14) |
| Oct 1, 2025 | 8.17% (0.08172) | 91.89th | v4 (v2025.03.14) |
| Sep 4, 2025 | 11.50% (0.11501) | 93.37th | v4 (v2025.03.14) |
| Sep 1, 2025 | 8.17% (0.08172) | 91.91th | v4 (v2025.03.14) |
| Aug 4, 2025 | 11.50% (0.11501) | 93.33th | v4 (v2025.03.14) |
| Aug 1, 2025 | 8.17% (0.08172) | 91.88th | v4 (v2025.03.14) |
| Jul 5, 2025 | 11.50% (0.11501) | 93.28th | v4 (v2025.03.14) |
| Jul 4, 2025 | 8.46% (0.08464) | 91.91th | v4 (v2025.03.14) |
| Jul 1, 2025 | 5.94% (0.05938) | 90.25th | v4 (v2025.03.14) |
| Jun 4, 2025 | 8.46% (0.08464) | 91.87th | v4 (v2025.03.14) |
| Jun 1, 2025 | 5.94% (0.05938) | 90.19th | v4 (v2025.03.14) |
| May 4, 2025 | 8.46% (0.08464) | 91.85th | v4 (v2025.03.14) |
| May 1, 2025 | 5.94% (0.05938) | 90.15th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.61% (0.08612) | 91.60th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.66% (0.11656) | 89.41th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.61% (0.08612) | 91.78th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.42% (0.00424) | 75.12th | v3 (v2023.03.01) |
| Feb 28, 2024 | 0.42% (0.00424) | 73.70th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.30% (0.00299) | 68.64th | v3 (v2023.03.01) |
| Jan 10, 2024 | 0.30% (0.00299) | 66.26th | v3 (v2023.03.01) |
| Dec 1, 2023 | 0.28% (0.00283) | 65.04th | v3 (v2023.03.01) |
| Aug 8, 2023 | 0.52% (0.00522) | 73.80th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.53% (0.00530) | 73.91th | v3 (v2023.03.01) |
| Jul 4, 2023 | 0.92% (0.00923) | 80.76th | v3 (v2023.03.01) |
| May 16, 2023 | 0.94% (0.00938) | 80.79th | v3 (v2023.03.01) |
| May 8, 2023 | 0.99% (0.00989) | 81.28th | v3 (v2023.03.01) |
| Mar 27, 2023 | 0.57% (0.00569) | 74.44th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.55% (0.00549) | 73.97th | v3 (v2023.03.01) |
| Mar 6, 2023 | 6.42% (0.06416) | 91.03th | v2 (v2022.01.01) |
| Oct 31, 2022 | 6.42% (0.06416) | 90.76th | v2 (v2022.01.01) |
| May 23, 2022 | 5.85% (0.05853) | 89.68th | v2 (v2022.01.01) |
| Apr 16, 2022 | 5.27% (0.05274) | 88.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.79% (0.04794) | 88.19th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.79% (0.04794) | 74.58th | v2 (v2022.01.01) |
| Feb 3, 2022 | 8.76% (0.08756) | 86.41th | v1 |
| Jan 6, 2022 | 8.76% (0.08756) | 86.25th | v1 |
| Sep 1, 2021 | 8.76% (0.08756) | 93.70th | v1 |
| Apr 14, 2021 | 8.76% (0.08756) | 0.00th | v1 |
Weaknesses (1)
References (5)
- http://www.securityfocus.com/bid/104659 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041267 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://github.com/advisories/GHSA-vhvh-528q-ff3p Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-8171
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8171 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/104659 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041267 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://github.com/advisories/GHSA-vhvh-528q-ff3p | Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-8171 | ||
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8171 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner microsoft
Published Jul 11, 2018
Updated Aug 5, 2024
Reserved Mar 14, 2018
Link CVE-2018-8171
CISA Vulnrichment
GHSA-VHVH-528Q-FF3P Updated n/a