New 7-Zip Vulnerability Could Let Crafted XZ Archives Run Code During Extraction
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Opening a crafted XZ archive in 7-Zip could let an attacker run code on the machine. The flaw, CVE-2026-14266, is a heap-based buffer overflow in how the archiver processes XZ chunked data, and Trend Micro's Zero Day Initiative (ZDI) detailed it on July 15. A fix shipped on June 25 in 7-Zip 26.02. The overflow lets an attacker "execute code in the context of the current process," per the
1Key Takeaways
- Opening a crafted XZ archive in 7-Zip could let an attacker run code on the machine.
- The flaw, CVE-2026-14266, is a heap-based buffer overflow in how the archiver processes XZ chunked data, and Trend Micro's Zero Day Initiative (ZDI) detailed it on July 15.
- A fix shipped on June 25 in 7-Zip 26.02.
- The overflow lets an attacker "execute code in the context of the current process," per the.
2AIWedia Score
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3Why it matters
Security headlines highlight new attack surfaces as AI gets embedded in more systems. The Hacker News reports that opening a crafted XZ archive in 7-Zip could let an attacker run code on the machine.
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