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."
Published May 12, 2017
7.5
HIGHCVSS 3.0
EPSS 5.51%
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."
Affected products
-
- Version Microsoft .NET Framework 2.0, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 4.7StatusaffectedConstraints-
- 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 Corporation | Microsoft .NET Framework | n/a |
|
- 2.0
- 3.5
- 3.5.1
- 4.5.2
- 4.6
- 4.6.1
- 4.6.2
- 4.7
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.
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 5.51% (0.05510) | 92.55th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.51% (0.05510) | 91.76th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.09% (0.01092) | 75.95th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.69% (0.02685) | 76.37th | v4 (v2025.03.14) |
| Mar 28, 2025 | 1.09% (0.01092) | 75.96th | v4 (v2025.03.14) |
| Mar 27, 2025 | 2.69% (0.02685) | 84.06th | v4 (v2025.03.14) |
| Mar 20, 2025 | 1.09% (0.01092) | 76.04th | v4 (v2025.03.14) |
| Mar 19, 2025 | 2.69% (0.02685) | 84.22th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.83% (0.00832) | 72.95th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.21% (0.00208) | 59.68th | v3 (v2023.03.01) |
| Jun 14, 2024 | 0.21% (0.00208) | 58.97th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.21% (0.00208) | 56.95th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.13% (0.12126) | 95.18th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.13% (0.12126) | 94.80th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.13% (0.12126) | 89.20th | v2 (v2022.01.01) |
| Feb 3, 2022 | 30.10% (0.30098) | 96.74th | v1 |
| Sep 1, 2021 | 30.10% (0.30098) | 98.51th | v1 |
| Apr 14, 2021 | 30.10% (0.30098) | 0.00th | v1 |
References (6)
- http://www.securityfocus.com/bid/98117 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1038458 vdb-entryx_refsource_SECTRACK
- https://github.com/advisories/GHSA-ch6p-4jcm-h8vh Advisory
- https://github.com/aspnet/Announcements/issues/239
- https://nvd.nist.gov/vuln/detail/CVE-2017-0248
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/98117 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1038458 | vdb-entryx_refsource_SECTRACK | |
| https://github.com/advisories/GHSA-ch6p-4jcm-h8vh | Advisory | |
| https://github.com/aspnet/Announcements/issues/239 | ||
| https://nvd.nist.gov/vuln/detail/CVE-2017-0248 | ||
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2017-0248 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.