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Vulnerability · NVD

CVE-2026-14266

HIGH 7.8

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.

Attack vector : Local No privileges required
Show raw CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS 0.94% above median percentile 57.7%

Tracked apps referencing this CVE

For each app: the affected range, the fixing version, and where the tracked app stands today.

  • 7-Zip Windows winget:7zip.7zip
    Affected <26.02 Fixed in 26.02 Latest tracked 26.02 patched
Vulnerable CPE configurations (1)
Vendor Product Versions
7-zip 7-zip
All platforms (wildcard)
 <26.02
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