.NET Security Feature Bypass Vulnerability

Source data

Overview

Origin validation error in .NET allows an unauthorized attacker to bypass a security feature over a network.

Impact & technical details

Security Feature Bypass

What kind of security feature could be bypassed by successfully exploiting this vulnerability? An attacker who successfully exploited this vulnerability could bypass NuGet Package Source Mapping, a security feature that restricts packages to approved sources. This could cause content from an unauthorized package source to be selected and installed.

CVSS base score

6.5 / 10

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C

Highest base score supplied by MSRC for this record; the vector belongs to that score. Ratings can vary by product. Microsoft Important is displayed as High; Moderate is displayed as Medium.

Affected products

• .NET 10.0 runtime installed on Linux
• .NET 10.0 runtime installed on Mac OS
• .NET 10.0 runtime installed on Windows
• .NET 11.0 runtime installed on Linux
• .NET 11.0 runtime installed on Mac OS
• .NET 11.0 runtime installed on Windows
• .NET 8.0 runtime installed on Linux
• .NET 8.0 runtime installed on Mac OS

Source guidance

Remediation

• Release Notes

At least one Microsoft vendor-fix reference is available. Check each affected product for its applicable update, prerequisites, and supported version.

Authoritative sources & updates

Findings and update information come from the linked publishers. GTP compiles the public record and provides the recommendation above. CVSS ratings shown here come from Microsoft. NVD references provide additional public context.

• Microsoft Security Response Center (opens in a new tab)
• Microsoft security update · 5130035 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft security update · 5130034 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · 5130036 (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)
• Microsoft security update · Release Notes (opens in a new tab)
• Microsoft remediation guidance (opens in a new tab)