A critical security flaw identified as CVE-2026-14266 has emerged in 7-Zip's XZ decoder component, allowing attackers to execute arbitrary code through specially constructed archive files during the extraction process. This heap overflow vulnerability poses a significant risk to users who handle untrusted compressed files. The latest 7-Zip version 26.02 addresses this issue with essential security patches. System administrators and individual users are strongly advised to update immediately to mitigate potential exploitation risks.

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