Will Yi willyiwei

## sack_vulnerability_analysis.md

      
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                willyiwei
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              Created
              April 19, 2026 18:26
            
              
                OpenBSD TCP SACK: 27-Year-Old Kernel Panic Vulnerability — Analysis
              
          
    OpenBSD TCP SACK: 27-Year-Old Kernel Panic Vulnerability


Discovered by Anthropic's Claude Mythos Preview (Project Glasswing, 2026).

Reproduced via static analysis using Claude Sonnet 4.6 + Opus 4.6.


Background

Project Glasswing is Anthropic's defensive security initiative that used Claude Mythos Preview — a frontier AI model — to find zero-day vulnerabilities in critical open-source infrastructure before attackers could exploit them.

  
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