CVEvulnerability

CVE-2026-14266

7.8 HIGH Published 2026-07-29 Modified 2026-08-07 Official page ↗
Status
Analyzed
Published
2026-07-29
Last modified
2026-08-07
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.0 ([email protected])
7.0 HIGH — CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-122

Description

7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of 7-Zip. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XZ chunked data. Crafted XZ-compressed data can trigger an overflow of a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-30169.

Affected configurations

• 7-zip 7-zip (< 26.02)

Related

Weakness · CWE (1)

  • CWE-122 Heap-based Buffer Overflow weakness

References