CVE-2020-1147

HIGHNVD 7.89.0▲
EchelonGraph scoreMEDIUM confidence

Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 7.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, nvd
Trending — 3 sources updated this weekExploited in the wild
7.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 94%CVSS: 7.8Exploit: NoneExposed: 0

A fix is available — apply it.

A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.

CVSS v3
7.8
EG Score
9.0(medium)
EPSS
99.8%
KEV
⚠ Exploited

Published

July 14, 2020

Last Modified

October 29, 2025

Advisory Details (5)

Auto-updated Jun 3, 2026
Patch available. Sources: microsoft.
generic
https://www.exploitalert.com/view-details.html?id=35992
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1147
generic

Packet Storm

http://packetstormsecurity.com/files/163644/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
generic

Packet Storm

http://packetstormsecurity.com/files/158876/Microsoft-SharePoint-Server-2019-Remote-Code-Execution.html
generic

Packet Storm

http://packetstormsecurity.com/files/158694/SharePoint-DataSet-DataTable-Deserialization.html

Patch Availability(6)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatdotnet-0:2.1.516-1.el8_02020-07-17redhat
redhatdotnet-0:2.1.516-1.el8_12020-07-16redhat
redhatrh-dotnet31-dotnet-0:3.1.106-1.el72020-07-15redhat
redhatrh-dotnet21-dotnet-0:2.1.516-1.el72020-07-15redhat
redhatdotnet-0:2.1.516-1.el8_22020-07-15redhat
redhatdotnet3.1-0:3.1.106-1.el8_22020-07-15redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(12 across 1 ecosystem)
NuGet(12)
PackageVulnerable rangeFixed inDependents
Microsoft.NETCore.App2.1.0 ... 2.1.9 (20 versions)2.1.20—
Microsoft.NETCore.App.Runtime.linux-arm3.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.linux-arm643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.linux-musl-arm643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.linux-musl-x643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.linux-x643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.osx-x643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.rhel.6-x643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.win-arm3.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.win-arm643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.win-x643.1.0 ... 3.1.5 (6 versions)3.1.6—
Microsoft.NETCore.App.Runtime.win-x863.1.0 ... 3.1.5 (6 versions)3.1.6—

All Vendor Advisories

(7)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 91× in last 7d / 394× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 554 total refreshes for this CVE.

  1. 2026-07-12 01:57 UTCEG score recompute
  2. 2026-07-12 01:57 UTCVendor advisory
  3. 2026-07-11 22:05 UTCEG score recompute
  4. 2026-07-11 22:05 UTCVendor advisory
  5. 2026-07-11 18:14 UTCEG score recompute
  6. 2026-07-11 18:14 UTCVendor advisory
  7. 2026-07-11 14:21 UTCEG score recompute
  8. 2026-07-11 14:21 UTCVendor advisory
  9. 2026-07-11 10:29 UTCEG score recompute
  10. 2026-07-11 10:29 UTCVendor advisory
  11. 2026-07-11 06:37 UTCEG score recompute
  12. 2026-07-11 06:37 UTCVendor advisory
  13. 2026-07-11 02:45 UTCEG score recompute
  14. 2026-07-11 02:45 UTCVendor advisory
  15. 2026-07-10 22:54 UTCEG score recompute
  16. 2026-07-10 22:54 UTCVendor advisory
  17. 2026-07-10 19:01 UTCEG score recompute
  18. 2026-07-10 19:01 UTCVendor advisory
  19. 2026-07-10 17:52 UTCCISA KEV update
  20. 2026-07-10 15:08 UTCEG score recompute
  21. 2026-07-10 15:08 UTCVendor advisory
  22. 2026-07-10 11:15 UTCEG score recompute
  23. 2026-07-10 11:15 UTCVendor advisory
  24. 2026-07-10 07:22 UTCEG score recompute
  25. 2026-07-10 07:22 UTCVendor advisory
Show 75 more
  1. 2026-07-10 03:28 UTCEG score recompute
  2. 2026-07-10 03:28 UTCVendor advisory
  3. 2026-07-09 23:36 UTCEG score recompute
  4. 2026-07-09 23:36 UTCVendor advisory
  5. 2026-07-09 19:45 UTCEG score recompute
  6. 2026-07-09 19:45 UTCVendor advisory
  7. 2026-07-09 15:53 UTCEG score recompute
  8. 2026-07-09 15:53 UTCVendor advisory
  9. 2026-07-09 11:59 UTCEG score recompute
  10. 2026-07-09 11:59 UTCVendor advisory
  11. 2026-07-09 08:07 UTCEG score recompute
  12. 2026-07-09 08:07 UTCVendor advisory
  13. 2026-07-09 04:15 UTCEG score recompute
  14. 2026-07-09 04:15 UTCVendor advisory
  15. 2026-07-09 00:21 UTCEG score recompute
  16. 2026-07-09 00:21 UTCVendor advisory
  17. 2026-07-08 20:29 UTCEG score recompute
  18. 2026-07-08 20:29 UTCVendor advisory
  19. 2026-07-08 16:37 UTCEG score recompute
  20. 2026-07-08 16:37 UTCVendor advisory
  21. 2026-07-08 12:45 UTCEG score recompute
  22. 2026-07-08 12:45 UTCVendor advisory
  23. 2026-07-08 08:51 UTCEG score recompute
  24. 2026-07-08 08:51 UTCVendor advisory
  25. 2026-07-08 04:59 UTCEG score recompute
  26. 2026-07-08 04:59 UTCVendor advisory
  27. 2026-07-08 01:06 UTCEG score recompute
  28. 2026-07-08 01:06 UTCVendor advisory
  29. 2026-07-07 21:14 UTCEG score recompute
  30. 2026-07-07 21:14 UTCVendor advisory
  31. 2026-07-07 19:01 UTCCISA KEV update
  32. 2026-07-07 17:23 UTCEG score recompute
  33. 2026-07-07 17:23 UTCVendor advisory
  34. 2026-07-07 17:16 UTCCISA KEV update
  35. 2026-07-07 13:30 UTCEG score recompute
  36. 2026-07-07 13:30 UTCVendor advisory
  37. 2026-07-07 09:38 UTCEG score recompute
  38. 2026-07-07 09:38 UTCVendor advisory
  39. 2026-07-07 05:47 UTCEG score recompute
  40. 2026-07-07 05:47 UTCVendor advisory
  41. 2026-07-07 01:54 UTCEG score recompute
  42. 2026-07-07 01:54 UTCVendor advisory
  43. 2026-07-06 22:02 UTCEG score recompute
  44. 2026-07-06 22:02 UTCVendor advisory
  45. 2026-07-06 18:09 UTCEG score recompute
  46. 2026-07-06 18:09 UTCVendor advisory
  47. 2026-07-06 14:17 UTCEG score recompute
  48. 2026-07-06 14:17 UTCVendor advisory
  49. 2026-07-06 10:23 UTCEG score recompute
  50. 2026-07-06 10:23 UTCVendor advisory
  51. 2026-07-06 06:30 UTCEG score recompute
  52. 2026-07-06 06:30 UTCVendor advisory
  53. 2026-07-06 02:38 UTCEG score recompute
  54. 2026-07-06 02:38 UTCVendor advisory
  55. 2026-07-05 22:46 UTCEG score recompute
  56. 2026-07-05 22:46 UTCVendor advisory
  57. 2026-07-05 18:53 UTCEG score recompute
  58. 2026-07-05 18:53 UTCVendor advisory
  59. 2026-07-05 15:01 UTCEG score recompute
  60. 2026-07-05 15:01 UTCVendor advisory
  61. 2026-07-05 11:09 UTCEG score recompute
  62. 2026-07-05 11:09 UTCVendor advisory
  63. 2026-07-05 07:17 UTCEG score recompute
  64. 2026-07-05 07:17 UTCVendor advisory
  65. 2026-07-05 03:24 UTCEG score recompute
  66. 2026-07-05 03:24 UTCVendor advisory
  67. 2026-07-04 23:33 UTCEG score recompute
  68. 2026-07-04 23:33 UTCVendor advisory
  69. 2026-07-04 19:40 UTCEG score recompute
  70. 2026-07-04 19:40 UTCVendor advisory
  71. 2026-07-04 15:48 UTCEG score recompute
  72. 2026-07-04 15:48 UTCVendor advisory
  73. 2026-07-04 11:55 UTCEG score recompute
  74. 2026-07-04 11:55 UTCVendor advisory
  75. 2026-07-04 08:03 UTCEG score recompute

Publicly available exploits

(3 references)

Working exploit code is in the public domain (1 Metasploit module) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-50151
    First seen Jul 23, 2021

    Microsoft SharePoint Server 2019 - Remote Code Execution (2)

    Open source ↗
  • Exploit-DBEDB-48747
    First seen Aug 17, 2020

    Microsoft SharePoint Server 2019 - Remote Code Execution

    Open source ↗
  • Metasploitexploit/windows/http/sharepoint_data_deserialization✓ verified
    First seen Jul 14, 2020

    SharePoint DataSet / DataTable Deserialization

    Open source ↗

Frequently asked(6)

What is CVE-2020-1147?
CVE-2020-1147 is a high vulnerability published on July 14, 2020. A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.
When was CVE-2020-1147 disclosed?
CVE-2020-1147 was first published in the National Vulnerability Database on July 14, 2020, with the most recent update on October 29, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2020-1147 actively exploited?
Yes. CISA added CVE-2020-1147 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Microsoft .NET Framework, SharePoint, Visual Studio. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2020-1147?
CVE-2020-1147 has a CVSS v3 base score of 7.8 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.
Which products are affected by CVE-2020-1147?
CVE-2020-1147 affects Microsoft .NET Framework, SharePoint, Visual Studio. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2020-1147?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-1147, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-1147

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