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Unpatched macOS bug could allow tampering trusted applications

📅 26 June 2026 at 16:22 UTC📰 Cyber InsiderView original source ↗
Unpatched macOS bug could allow tampering trusted applications

Security duo Mysk has disclosed an unpatched macOS vulnerability that they say allows web-installed applications to silently modify other apps' binaries, potentially bypassing key macOS security protections. In a post published on X, Mysk said the issue affects macOS 26 and macOS 27 and allows “any command” to modify other applications' binaries in the background … The post Unpatched macOS bug could allow tampering trusted applications appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A previously unknown macOS vulnerability allows web-installed applications to silently modify other apps' binaries, potentially bypassing key security protections, affecting macOS 26 and 27.

⚙️Technical Details
Affected Systems
macOS 26macOS 27Attack Vectors: Web-installed applications
Attack Vectors
Web-installed applications
💥Impact Assessment
Severity: High
Who Is at Risk
Users of web-installed applications, including developers and users of Signal, Brave, Google Chrome, and Xcode
🛡️Recommended Actions
1Exercise caution when installing software distributed directly from websites, particularly from untrusted or unfamiliar developers.
2Avoid installing macOS apps from the web until a fix becomes available.
3Monitor for security updates addressing this vulnerability
📦Affected Products
SignalBraveGoogle ChromeXcode

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