CVE-2026-43793 — CRITICAL (9.8)

Q: How severe is CVE-2026-43793?

CVE-2026-43793 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-43793?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.

Vulnerability Description

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.

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Apple	Macos	>= 14.0, < 14.8.8

Related Weaknesses (CWE)

CWE-20

References

https://support.apple.com/en-us/128067Release NotesVendor Advisory
https://support.apple.com/en-us/128071Release NotesVendor Advisory
https://support.apple.com/en-us/128072Release NotesVendor Advisory

FAQ

What is CVE-2026-43793?

CVE-2026-43793 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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...

How severe is CVE-2026-43793?

CVE-2026-43793 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-43793?

Check the references section above for vendor advisories and patch information. Affected products include: Apple Macos.