SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2019-1301

A denial of service vulnerability exists when .NET Core improperly handles web requests, aka '.NET Core Denial of Service Vulnerability'.

HIGH 7.5EPSS 5.33%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (5.33%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A denial of service vulnerability exists when .NET Core improperly handles web requests, aka '.NET Core Denial of Service Vulnerability'.

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
5.33% probability · 93th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
microsoft/.net core · microsoft/powershell core
Source
secure@microsoft.com
EPSS trend
0%5%10%27 October 2026: 5.33%27 October 202627 October 2026

EPSS 5.3% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.