.NET Framework Information Disclosure Vulnerability
Priority LOW 31Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
<p>An information disclosure vulnerability exists when the .NET Framework improperly handles objects in memory. An attacker who successfully exploited the vulnerability could disclose contents of an affected system's memory.</p> <p>To exploit the vulnerability, an authenticated attacker would need to run a specially crafted application.</p> <p>The update addresses the vulnerability by correcting how the .NET Framework handles objects in memory.</p>
Why it matters now
EPSS 0.03288 88th percentileScored 2026-11-07
Fix Fixed Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 (Microsoft): publicationMicrosoft .NET Framework 4.8 (Microsoft): publication+10 more products
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 | 4.0.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 4.8 | 4.8.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.8 | 4.8.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.2 | 4.7.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 | 3.0.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 | 3.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 | 3.5.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 4.6 | 4.0.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 2.0 Service Pack 2 | 2.0.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5 | 3.5.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 3.5.1 | 3.5.0 to before publication | publication | Patch available | CNA |
| Microsoft | Microsoft .NET Framework 4.5.2 | 4.0.0.0 to before publication | publication | Patch available | CNA |
- Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 VendorMicrosoft Affected 4.0.0.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 4.8 VendorMicrosoft Affected 4.8.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.8 VendorMicrosoft Affected 4.8.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.7.2 VendorMicrosoft Affected 4.7.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 VendorMicrosoft Affected 3.0.0.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 VendorMicrosoft Affected 3.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 VendorMicrosoft Affected 3.5.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 4.6 VendorMicrosoft Affected 4.0.0.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 2.0 Service Pack 2 VendorMicrosoft Affected 2.0.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5 VendorMicrosoft Affected 3.5.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 3.5.1 VendorMicrosoft Affected 3.5.0 to before publication Fixed in publication Patch available CNA
- Microsoft .NET Framework 4.5.2 VendorMicrosoft Affected 4.0.0.0 to before publication Fixed in publication Patch available CNA
CPE configurations NVD · 31
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:* | 2.0 sp2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:* | 3.5 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | r2 | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:* | 4.6.2 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:* | 4.7 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* | 4.7.1 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* | 4.7.2 | Vulnerable | Microsoft |
- cpe:2.3:a:microsoft:.net_framework:2.0:sp2:*:*:*:*:*:* Versions 2.0 sp2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:3.5:*:*:*:*:*:*:* Versions 3.5 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.6.2:*:*:*:*:*:*:* Versions 4.6.2 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.7:*:*:*:*:*:*:* Versions 4.7 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.7.1:*:*:*:*:*:*:* Versions 4.7.1 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.7.2:*:*:*:*:*:*:* Versions 4.7.2 Vulnerable ·Microsoft
Show 21 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* | 1607 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:* | 4.6 | Vulnerable | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:* | 4.6.1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* | 1709 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* | 1803 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* | 1809 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:* | 4.8 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* | 1903 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* | 1909 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* | 2004 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* | 1903 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* | 1909 | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* | 2004 | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:* | 3.5.1 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:* | r2 sp1 | Running on | Microsoft |
| cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:* | 4.5.2 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Microsoft |
- cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* Versions 1607 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.6:*:*:*:*:*:*:* Versions 4.6 Vulnerable ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.6.1:*:*:*:*:*:*:* Versions 4.6.1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:* Versions 1709 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:* Versions 1803 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* Versions 1809 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.8:*:*:*:*:*:*:* Versions 4.8 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:*:* Versions 1903 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* Versions 1909 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* Versions 2004 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:* Versions 1903 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:* Versions 1909 Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* Versions 2004 Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:3.5.1:*:*:*:*:*:*:* Versions 3.5.1 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:*:* Versions r2 sp1 Running on ·Microsoft
- cpe:2.3:a:microsoft:.net_framework:4.5.2:*:*:*:*:*:*:* Versions 4.5.2 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft
Remediation
- Fix · CNA Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 4.8 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5 AND 4.8 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5 AND 4.7.2 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5 AND 4.6.2/4.7/4.7.1/4.7.2 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5 AND 4.7.1/4.7.2 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5 AND 4.6/4.6.1/4.6.2 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 4.6 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 2.0 Service Pack 2 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 3.5.1 (Microsoft) Fixed in publication
- Fix · CNA Microsoft .NET Framework 4.5.2 (Microsoft) Fixed in publication
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
Not affected: 3 products
- .NET Core 2.1 on Red Hat Enterprise Linux
- .NET Core 3.1 on Red Hat Enterprise Linux
- Red Hat Enterprise Linux 8
Timeline
- 2026-10-02 Threatist record created from CVE-2020-16937
- 2026-10-03 Alias added: GHSA-rc5w-jj6x-53wj
More Microsoft .net Framework vulnerabilities
- TI-2020-00622 XML injection in Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2 KEVCVSS 3.1CRITICAL 9.8
- TI-2020-01112 A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and… KEVCVSS 3.1HIGH 7.8
- TI-2017-06273 Code injection in Microsoft .NET Framework KEVCVSS 3.1HIGH 7.8
- TI-2015-01495 The Windows DirectWrite library, as used in Microsoft .NET Framework 3.0 SP2, 3.5, 3.5.1… KEVCVSS 3.1HIGH 7.8
- TI-2024-19239 .NET Framework Information Disclosure Vulnerability KEVCVSS 3.1HIGH 7.5
- TI-2023-18684 ASP.NET Elevation of Privilege Vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2020-16937 · CVE Program
- CVE-2020-16937 · NVD
- FIRST EPSS
- GHSA-rc5w-jj6x-53wj · GitHub Advisory Database · CC BY 4.0
- CVE-2020-16937 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences