Core: AspNetCoreModule WebSocket DOS
Published Jan 8, 2019
7.5
HIGHCVSS 3.0
EPSS 8.21%
Description
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.2, ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0564.
Affected products
-
- Version 2.1StatusaffectedConstraints-
- Version 2.2StatusaffectedConstraints-
- 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 Core | n/a |
|
- 2.1
- 2.2
No data.
.NET Core on Red Hat Enterprise Linux
rh-dotnet21-0:2.1-6.el7
Fixed · RHSA-2019:0040
.NET Core on Red Hat Enterprise Linux
rh-dotnet21-dotnet-0:2.1.503-1.el7
Fixed · RHSA-2019:0040
.NET Core on Red Hat Enterprise Linux
rh-dotnet22-0:2.2-2.el7
Fixed · RHSA-2019:0040
.NET Core on Red Hat Enterprise Linux
rh-dotnet22-dotnet-0:2.2.102-1.el7
Fixed · RHSA-2019:0040
.NET Core 1.0 on Red Hat Enterprise Linux
rh-dotnetcore10-dotnetcore
Not affected
.NET Core 1.1 on Red Hat Enterprise Linux
rh-dotnetcore11-dotnetcore
Not affected
Red Hat Enterprise Linux 8
dotnet
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| .NET Core on Red Hat Enterprise Linux | rh-dotnet21-0:2.1-6.el7 | Fixed | RHSA-2019:0040 |
| .NET Core on Red Hat Enterprise Linux | rh-dotnet21-dotnet-0:2.1.503-1.el7 | Fixed | RHSA-2019:0040 |
| .NET Core on Red Hat Enterprise Linux | rh-dotnet22-0:2.2-2.el7 | Fixed | RHSA-2019:0040 |
| .NET Core on Red Hat Enterprise Linux | rh-dotnet22-dotnet-0:2.2.102-1.el7 | Fixed | RHSA-2019:0040 |
| .NET Core 1.0 on Red Hat Enterprise Linux | rh-dotnetcore10-dotnetcore | Not affected | n/a |
| .NET Core 1.1 on Red Hat Enterprise Linux | rh-dotnetcore11-dotnetcore | Not affected | n/a |
| Red Hat Enterprise Linux 8 | dotnet | Not affected | n/a |
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:N/A:H
1 other source (Red Hat) ▾
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:P
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 3, 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 (26 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 8.21% (0.08210) | 94.72th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.21% (0.08210) | 94.14th | v5 (v2026.06.15) |
| May 29, 2026 | 8.91% (0.08905) | 92.70th | v4 (v2025.03.14) |
| Jan 2, 2026 | 6.71% (0.06706) | 91.00th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.00% (0.04001) | 87.36th | v4 (v2025.03.14) |
| Mar 29, 2025 | 16.99% (0.16994) | 91.68th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.95% (0.04954) | 88.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.45% (0.00445) | 75.77th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.34% (0.00335) | 71.46th | v3 (v2023.03.01) |
| May 31, 2024 | 0.32% (0.00317) | 70.37th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.28% (0.00284) | 67.78th | v3 (v2023.03.01) |
| Jan 2, 2024 | 0.29% (0.00288) | 65.60th | v3 (v2023.03.01) |
| Nov 14, 2023 | 0.36% (0.00355) | 68.86th | v3 (v2023.03.01) |
| Jun 6, 2023 | 0.37% (0.00374) | 68.79th | v3 (v2023.03.01) |
| May 22, 2023 | 0.38% (0.00382) | 68.99th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.37% (0.00374) | 68.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.85% (0.05853) | 90.48th | v2 (v2022.01.01) |
| Nov 21, 2022 | 5.85% (0.05853) | 90.17th | v2 (v2022.01.01) |
| Oct 15, 2022 | 5.27% (0.05274) | 89.46th | v2 (v2022.01.01) |
| Jul 5, 2022 | 4.79% (0.04794) | 88.46th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.00% (0.04004) | 84.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 18.22% (0.18222) | 93.54th | v2 (v2022.01.01) |
| Feb 3, 2022 | 36.33% (0.36327) | 98.04th | v1 |
| Jan 6, 2022 | 36.33% (0.36327) | 98.02th | v1 |
| Sep 1, 2021 | 11.28% (0.11281) | 95.49th | v1 |
| Apr 14, 2021 | 11.28% (0.11281) | 0.00th | v1 |
References (7)
- http://www.securityfocus.com/bid/106410 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2019:0040 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2019-0548 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1660636 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2019-0548
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0548 x_refsource_CONFIRMPatchVendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2019-0548
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/106410 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2019:0040 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2019-0548 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1660636 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-0548 | ||
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0548 | x_refsource_CONFIRMPatchVendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2019-0548 |
Change history (0)
No recorded changes yet.