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High ALAS2023-2026-2037 1 CVE

Important: 7zip security update (Amazon Linux 2023)

Published Aug 3, 2026 · Updated Aug 4, 2026

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

ReleasePackageFixed 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

  • High 7.0
    CVE-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

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2026-14266.html