CVE-2026-43793

An issue existed in the handling of environment variables

Critical · published July 27, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
47.2
In the wild
Unconfirmed
What it is

An issue existed in the handling of environment variables. This issue was addressed with improved validation. This issue is fixed in macOS Sequoia 15.7.8, macOS Sonoma 14.8.8, macOS Tahoe 26.6. An app may be able to cause unexpected system termination.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00585 · 47.2th percentile
Published
2026-07-27T20:13Z
EPSS history
Timeline
  • 27 JUL 20:13Z
    An issue existed in the handling of environment variables
    cvelistv5