CVE-2019-0820
At a glance
- Severity
- Not available
- EPSS
- EPSS 5.72 % · percentile 93 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
Advisories
- GHSA-cmhx-cq75-c4mj — Regular Expression Denial of Service in System.Text.RegularExpressions
European references
- ENISA EUVD · EUVD-2021-1682
- GCVE · GCVE-0-2019-0820
CERT-FR advisories
- CERTFR-2019-AVI-224 — Multiples vulnérabilités dans Microsoft .Net · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:microsoft:.net_core:1.0:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_core:1.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_core:2.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_core:2.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.0:sp2:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:*cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.1:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_aus:8.6:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*
Affected products
| Product | Versions |
|---|---|
| Microsoft · Microsoft .NET Framework 4.5.2 | affected Windows 7 for 32-bit Systems Service Pack 1 ; affected Windows 7 for x64-based Systems Service Pack 1 ; affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) ; affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 ; affected Windows Server 2012 ; affected Windows Server 2012 (Server Core installation) |
| Microsoft · Microsoft .NET Framework 4.6 | affected Windows Server 2008 for 32-bit Systems Service Pack 2 ; affected Windows Server 2008 for x64-based Systems Service Pack 2 |
| Microsoft · .NET Core | affected 1 ; affected 1.1 ; affected 2.1 ; affected 2.2 |
| Microsoft · Microsoft .NET Framework 4.7.2 | affected Windows 10 Version 1803 for 32-bit Systems ; affected Windows 10 Version 1803 for x64-based Systems ; affected Windows Server, version 1803 (Server Core Installation) ; affected Windows 10 Version 1803 for ARM64-based Systems ; affected Windows Server 2019 ; affected Windows Server 2019 (Server Core installation) |
| Microsoft · Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 | affected Windows 7 for 32-bit Systems Service Pack 1 ; affected Windows 7 for x64-based Systems Service Pack 1 ; affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) ; affected Windows Server 2008 R2 for x64-based Systems Service Pack 1 ; affected Windows Server 2012 ; affected Windows Server 2012 (Server Core installation) |
| Microsoft · Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 | affected Windows Server 2016 ; affected Windows Server 2016 (Server Core installation) |
| Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for 32-bit Systems Service Pack 1 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows 7 for x64-based Systems Service Pack 1 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for x64-based Systems Service Pack 1 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 (Server Core installation) | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit systems | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based systems | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 R2 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows RT 8.1 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Server Core installation) | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows Server 2016 | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for 32-bit Systems | affected unspecified |
| Microsoft · Microsoft .NET Framework 4.8 on Windows 10 Version 1607 for x64-based Systems | affected unspecified |
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820
- https://access.redhat.com/errata/RHSA-2019:1259
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |