Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: 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 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.
Fixed packages 9
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | 7zip | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-debuginfo | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-debugsource | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-reduced | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-reduced-debuginfo | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-standalone | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-standalone-all | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-standalone-all-debuginfo | 0:26.02-17.amzn2023.0.1 |
| Amazon Linux · 2023 | 7zip-standalone-debuginfo | 0:26.02-17.amzn2023.0.1 |
Vulnerabilities 1
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High 7.0CVE-2026-14266 Public exploit
7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability
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 …
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-14266.html