Out-of-bounds write in 7-Zip - CVE-2026-48095
Published: May 26, 2026
Vulnerability identifier: #VU132311
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-48095
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code.
The vulnerability exists due to out-of-bounds write in the NTFS archive handler when processing a crafted NTFS image containing a compressed stream. A remote attacker can trick the victim into opening a crafted file to execute arbitrary code.
User interaction is required to open the crafted image, and the issue is triggered during extraction or testing of a compressed file from the image.
Affected software
7-Zip
How to mitigate CVE-2026-48095
Install security update from vendor's website.
7-Zip - update to 26.01