HIGH 7.0 NVD
CVE-2026-14266
7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on a
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.
References
- https://www.zerodayinitiative.com/advisories/ZDI-26-444/
- http://www.openwall.com/lists/oss-security/2026/07/17/12
This high severity vulnerability with a CVSS score of 7.0 was published on 2026-07-29 via NVD.
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