High 7.5Published May 21, 2020

CVE-2020-1108A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests.

Updated under an hour ago (Nov 2, 2026, 12:23 AM ET)

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It affects microsoft .net and 6 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Start free and add your stackFree account, 3 products Every CVE for microsoft .net Exploited in the last 30 days

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against a .NET Core or .NET Framework web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the .NET Core or .NET Framework application. The update addresses the vulnerability by correcting how the .NET Core or .NET Framework web application handles web requests.

CVSS: 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): Not given
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Aug 19, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

microsoft .net microsoft:.net	5.0; 5.0; 5.0	NVD
microsoft .net_core microsoft:.net_core	from 2.1 through 2.1.18; from 3.0 through 3.1.4; 2.1; 3.1	NVD
microsoft .net_framework microsoft:.net_framework	2.0; 3.0; 4.6; 3.5; 3.5; 4.5.2; 4.6; 4.6.1; and 76 more ranges	NVD
microsoft visual_studio_2017 microsoft:visual_studio_2017	15.9	NVD
microsoft visual_studio_2019 microsoft:visual_studio_2019	16.0; 16.4; 16.5	NVD
microsoft powershell microsoft:powershell	7.0	NVD
microsoft powershell_core microsoft:powershell_core	6.2	NVD

References

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1108
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1108	patch, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.