Security vulnerability found in 7-Zip 26.00

Source:Heise Online

02 — Who / Subject

7-Zip development team

03 — Where / Locus

Global

04 — When / Temporality

May 27, 2026

Verified: May 27, 2026

05 — Why / Core Summary

"A heap-based buffer overflow vulnerability (CVE-2026-48095) was discovered in 7-Zip 26.00. The flaw allows arbitrary code execution when processing specially crafted NTFS streams. Version 26.01, released on April 27, 2026, addresses this issue."

Conflict Analysis

This is a critical security update for a winformationly used utility. Users are advised to update manually as there is no auto-update mechanism.

Recommended Background Resource

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The Art of Software Security Assessment: Identifying and Preventing Software Vulnerabilities

Author: Mark Dowd, John McDonald, and Justin Schuh

This book provides a comprehensive understanding of low-level vulnerabilities like heap-based buffer overflows, which are critical for understanding how software like 7-Zip handles complex file structures and memory management.

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