CVE-2026-14266
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.
How to fix
- 7-zip 7-zip26.02 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| 7-zip 7-zip | v < 26.02 | 26.02 |
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