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Microsoft Copilot RCE Bug Patched in Visual Studio, SSMS

By PulseAugur Editorial · [1 sources] ·

A critical remote code execution vulnerability, CVE-2026-103572, has been identified in Microsoft's Copilot component, affecting Visual Studio and SQL Server Management Studio. The bug, rated CVSS 8.8, stems from an improper ordering of operations where path validation occurred before path resolution. This allowed attackers to exploit issues like trailing dots or path traversal to write malicious configurations to sensitive files, ultimately enabling arbitrary code execution. Microsoft has since patched this vulnerability. AI

IMPACT This vulnerability highlights the security risks associated with AI agents interacting with file systems and configurations, necessitating careful path validation.

RANK_REASON The item details a specific vulnerability and its fix within a software product, not a novel AI model release or research breakthrough.

Read on dev.to — MCP tag →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Microsoft Copilot RCE Bug Patched in Visual Studio, SSMS

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27 / 100
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Tool
The item details a specific vulnerability and its fix within a software product, not a novel AI model release or research breakthrough.
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product, safety
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High
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Breaking (< 6h)
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COVERAGE [1]

  1. dev.to — MCP tag TIER_1 English(EN) · Mike Moore ·

    Resolve the Path Before You Check It: The Copilot MCP Config Bug in 20 Lines

    <p><em>Originally published at <a href="https://webofmike.com/trailing-dot-mcp-config-bypass/" rel="noopener noreferrer">webofmike.com</a> on 2026-10-21. The demo repo was run before publishing.</em></p> <p>If your agent can pick a file path and your code decides whether that wri…

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