CVE-2026-48095

Public on 2026-05-29
Modified on 2026-05-29
Description
A heap buffer overflow vulnerability (GHSL-2026-140) exists in 7-Zip version 26.00, caused by an under-allocation in the NTFS compressed stream buffer (GetCuSize shift UB), potentially allowing attackers to exploit this issue for arbitrary code execution or application crashes.
Severity
Important severity
Important
See what this means
CVSS v3 Base Score
7.8
See breakdown

Affected Packages

Platform Package Release Date Advisory Status
Amazon Linux 2023 7zip Pending Fix
Amazon Linux 2 - Graphicsmagick1.3 Extra p7zip Pending Fix
Amazon Linux 2023 p7zip Not Affected

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-48095 Mitre: CVE-2026-48095