CVE-2020-0646 is a remote code execution vulnerability in Microsoft .NET Framework caused by improper input validation. The flaw arises when the framework fails to validate input correctly, creating an injection condition that can allow attacker-controlled input to influence program execution. Specific vulnerable functions and affected code paths are not available in the provided information.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
If you can’t patch tonight, do this now.
Patch, then assume compromise.
1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository contains a single Metasploit module: 'SharePoint Workflows XOML Injection' (modules/exploits/windows/http/sharepoint_workflows_xoml.rb). The module exploits CVE-2020-0646, a remote code execution vulnerability in Microsoft SharePoint's workflow functionality. By sending a specially crafted XOML payload to the SharePoint SOAP endpoint '/_vti_bin/webpartpages.asmx', the exploit achieves arbitrary command execution on the server. The module supports multiple payload types, including Windows command execution, EXE dropper, and PowerShell payloads. It requires valid Windows authentication credentials and the base path to the SharePoint application. The exploit is operational and provides full remote code execution capabilities. The code is well-structured, leverages Metasploit's HttpClient, CmdStager, and Powershell mixins, and includes a check method to verify vulnerability status. No hardcoded IPs or domains are present; endpoints are configurable. The repository is a typical Metasploit exploit module, focused and production-ready.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.