Critical

Critical 7-Zip Flaw Allows Code Execution by Opening Crafted XZ-Compressed Files. Update it now!

Security Affairs

July 20, 2026 at 10:56 AM

Overview

7-Zip has addressed a significant vulnerability that could allow attackers to execute harmful code by tricking users into opening specially crafted XZ-compressed files. The flaw was identified by researcher Landon Peng and affects versions prior to 26.02. If a user opens a malicious archive, it could lead to remote code execution, posing a risk to their system. Users of 7-Zip should update to version 26.02 immediately to protect themselves from potential exploitation. This incident is a reminder of the importance of keeping software up to date to safeguard against emerging threats.

Key Takeaways

Affected Systems: 7-Zip versions prior to 26.02
Action Required: Update to 7-Zip version 26.
Timeline: Disclosed on October 2023

Original Article Summary

7-Zip fixed a vulnerability that could let attackers run code by tricking users into opening malicious XZ-compressed archive files. 7-Zip released version 26.02 to address a remote code execution vulnerability in its handling of XZ-compressed data. The flaw, discovered by researcher Landon Peng, can be triggered through a specially crafted archive. If a user opens […]

Impact

7-Zip versions prior to 26.02

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Disclosed on October 2023

Remediation

Update to 7-Zip version 26.02

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Vulnerability, Update, Critical.

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