CVE-2026-14266
CVE-2026-14266 · 7-Zip XZ Decompression Heap-based Buffer Overflow Remote Code Execution Vulnerability
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.0 · High · EPSS 0.7% · Public exploit · Fix available
- Published
- Updated
Stack: system
Affected products and versions
7-zip
- Versions
- 26.01: Affected
No fix published
7zip Debian:12
- Versions
- 22.01+dfsg-10~exp1
- 22.01+dfsg-8
- 22.01+dfsg-8+deb12u1
- 22.01+dfsg-9
- 22.01+really25.01+dfsg-0+deb12u1
- 22.01+really26.01+dfsg-0+deb12u1
- Affected ranges
- ECOSYSTEM: < 22.01+really26.02+dfsg-0+deb12u1
Update to 22.01+really26.02+dfsg-0+deb12u1
7zip Debian:13
- Versions
- 24.09+dfsg-8
- 25.00+dfsg-1
- 25.01+dfsg-1
- 25.01+dfsg-1~deb13u1
- 25.01+dfsg-1~deb13u1~bpo12+1
- 25.01+dfsg-1~deb13u2
- 25.01+dfsg-2
- 25.01+dfsg-3
- 25.01+dfsg-4
- 25.01+dfsg-5
- 26.00+dfsg-1
- 26.00+dfsg-2
- 26.00+dfsg-3
- 26.00+dfsg-4
- 26.00+dfsg-5
- 26.00+dfsg1-1
- 26.00+dfsg1-2
- 26.00+dfsg1-3
- 26.01+dfsg-1
- 26.01+dfsg-2
- 26.01+dfsg-3
- 26.02+dfsg-1
- 26.02+dfsg-2
- 26.02+dfsg-3
- 26.03+dfsg-1
- 26.03+dfsg-2
- 26.03+dfsg-3
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
7zip Debian:14
- Versions
- 24.09+dfsg-8
- 25.00+dfsg-1
- 25.01+dfsg-1
- 25.01+dfsg-1~deb13u1
- 25.01+dfsg-1~deb13u1~bpo12+1
- 25.01+dfsg-1~deb13u2
- 25.01+dfsg-2
- 25.01+dfsg-3
- 25.01+dfsg-4
- 25.01+dfsg-5
- 26.00+dfsg-1
- 26.00+dfsg-2
- 26.00+dfsg-3
- 26.00+dfsg-4
- 26.00+dfsg-5
- 26.00+dfsg1-1
- 26.00+dfsg1-2
- 26.00+dfsg1-3
- 26.01+dfsg-1
- 26.01+dfsg-2
- 26.01+dfsg-3
- Affected ranges
- ECOSYSTEM: < 26.02+dfsg-1
Update to 26.02+dfsg-1
p7zip Debian:12
- Versions
- 16.02+dfsg-8
- 16.02+really25.01+dfsg-0+deb12u1
- 16.02+really26.01+dfsg-0+deb12u1
- Affected ranges
- ECOSYSTEM: < 16.02+really26.02+dfsg-0+deb12u1
Update to 16.02+really26.02+dfsg-0+deb12u1
p7zip Debian:13
- Affected ranges
- ECOSYSTEM: < 16.02+transitional.1
Update to 16.02+transitional.1
p7zip Ubuntu:14.04:LTS
- Versions
- 9.20.1~dfsg.1-4
- 9.20.1~dfsg.1-4+deb7u1build0.14.04.1
- 9.20.1~dfsg.1-4+deb7u2build0.14.04.1
- 9.20.1~dfsg.1-4+deb7u3build0.14.04.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
p7zip Ubuntu:16.04:LTS
- Versions
- 9.20.1~dfsg.1-4.2
- 9.20.1~dfsg.1-4.2ubuntu0.1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
p7zip Ubuntu:18.04:LTS
- Versions
- 16.02+dfsg-4
- 16.02+dfsg-5
- 16.02+dfsg-6
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
p7zip Ubuntu:20.04:LTS
- Versions
- 16.02+dfsg-7
- 16.02+dfsg-7build1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
p7zip Ubuntu:22.04:LTS
- Versions
- 16.02+dfsg-8
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
7zip Ubuntu:Pro:22.04:LTS
- Versions
- 21.03~beta+dfsg-6
- 21.04~beta+dfsg-1
- 21.06+dfsg-1
- 21.07+dfsg-1
- 21.07+dfsg-2
- 21.07+dfsg-3
- 21.07+dfsg-4
- 21.07+dfsg-4ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
7zip Ubuntu:Pro:24.04:LTS
- Versions
- 23.01+dfsg-3
- 23.01+dfsg-7
- 23.01+dfsg-8
- 23.01+dfsg-11
- 23.01+dfsg-11ubuntu0.1~esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
7zip Ubuntu:26.10
- Versions
- 26.00+dfsg-1
- 26.01+dfsg-2
- 26.01+dfsg-3
- 26.02+dfsg-1
- 26.02+dfsg-2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
7zip Ubuntu:26.04:LTS
- Versions
- 25.01+dfsg-2
- 25.01+dfsg-3
- 25.01+dfsg-4
- 25.01+dfsg-5
- 26.00+dfsg-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published