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7/20/2026
The headline needs to preserve: 7-Zip, XZ, CVE-2026-14266, buffer overflow, patched/discovered. Let me count words and keep it tight.

The headline needs to preserve: 7-Zip, XZ, CVE-2026-14266, buffer overflow, patched/discovered. Let me count words and keep it tight.

Original: Critical 7‑Zip XZ Buffer Overflow (CVE‑2026‑14266) Discovered and Patched

Short summary

A critical heap-based buffer overflow (CVE-2026-14266) in 7-Zip's XZ decoder allows arbitrary code execution when a user opens a crafted XZ archive. Versions 21.07 through 26.01 are affected. The fix is to upgrade to 7-Zip 26.02, and organizations should scan email gateways for XZ files and verify embedded library versions.

  • •CVE-2026-14266: heap buffer overflow in 7-Zip XZ decoder (C/XzDec.c) allows arbitrary code execution via crafted XZ archive
  • •Versions 21.07–26.01 affected; upgrade to 26.02 immediately
  • •Attack vector is local with user interaction — common phishing/malicious attachment delivery

Generated with AI, which can make mistakes.

#open-source
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