SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityAnalyzed

CVE-2025-21171

.NET Remote Code Execution Vulnerability

HIGH 7.5EPSS 1.70%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.70%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

.NET Remote Code Execution Vulnerability

CVSS 3.1
7.5 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
1.70% probability · 76th percentile
CISA KEV
Not listed
Weakness
CWE-122
Affected
microsoft/.net · microsoft/powershell · microsoft/visual studio 2022
Source
secure@microsoft.com

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.