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CISA warns of CopyFail Linux bug actively exploited in hacking campaigns
Technology
Published on 5 May 2026
Hackers are already using it against real systems
The U.S. Cybersecurity agency CISA says the CopyFail bug is actively being leveraged in hacking campaigns and could endanger Linux-based servers and datacenters. Organizations running affected major Linux versions are urged to treat it as high risk, as the vulnerability appears to be in use in the wild rather than just a theoretical concern.
- CISA says the CopyFail bug is being exploited in ongoing campaigns
- Major risk flagged for Linux servers and datacenters
- The issue is not hypothetical, it is already in real attacks
- Admins should prioritize checks and mitigations for affected versions
Read the full story at TechCrunch
This summarization was done by Beige for a story published on 
TechCrunch