CVE-2026-14266
Fixed in a distro release EPSS <1%CVSS 7.0
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.
Products: 7-zip
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux 2023 | 7zip | 26.02-17.amzn2023.0.1 |
| Amazon Linux 2023 | 7zip-reduced | 26.02-17.amzn2023.0.1 |
| Amazon Linux 2023 | 7zip-standalone | 26.02-17.amzn2023.0.1 |
| Amazon Linux 2023 | 7zip-standalone-all | 26.02-17.amzn2023.0.1 |
| Debian 12 | 7zip | 22.01+really26.02+dfsg-0+deb12u1 |
| Debian 12 | p7zip | 16.02+really26.02+dfsg-0+deb12u1 |
| Debian 13 | 7zip | no fix |
| Debian 13 | p7zip | 16.02+transitional.1 |
| Debian 14 | 7zip | 26.02+dfsg-1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Module for Basesystem 15 SP7 | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server 15 SP4-LTSS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server 15 SP5-LTSS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server 15 SP6-LTSS | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server 16.0 | 7zip | 26.02-160000.1.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | 7zip | 26.02-150400.9.9.1 |
| SUSE Linux Enterprise Server for SAP applications 16.0 | 7zip | 26.02-160000.1.1 |
| Ubuntu 14.04 LTS | p7zip | no fix |
| Ubuntu 16.04 LTS | p7zip | no fix |
| Ubuntu 18.04 LTS | p7zip | no fix |
| Ubuntu 20.04 LTS | p7zip | no fix |
| Ubuntu 22.04 LTS | p7zip | no fix |
| Ubuntu 26.04 LTS | 7zip | no fix |
| Ubuntu 26.10 | 7zip | no fix |
| Ubuntu Pro 22.04 LTS | 7zip | no fix |
| Ubuntu Pro 24.04 LTS | 7zip | no fix |
| openSUSE Leap 16.0 | 7zip | 26.02-160000.1.1 |
| openSUSE Tumbleweed | 7zip | 26.02-1.1 |