Vulnerability DatabaseMSC-2026-5232
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MSC-2026-5232
Published:May 16, 2026
Updated:May 16, 2026
Malicious NuGet packages impersonate legitimate .NET UI and infrastructure libraries and deliver a .NET Reactor–obfuscated infostealer via module initializers. The payload automatically executes on load and exfiltrates browser credentials, cryptocurrency wallets, SSH keys, and local files to an attacker-controlled server.
Related Resources (1)
https://www.reddit.com/r/SecOpsDaily/comments/1t5t3xf/5_malicious_nuget_packages_impersonate_chinese_ui/
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CVSS v4
Base Score:
8.6
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
9.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
NONE