What is CVE-2023-42826?

CVE-2023-42826 is a high-severity vulnerability in Apple macOS, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2024-01-10.

How severe is CVE-2023-42826?

High severity. CVSS v3 base score is 7.8 out of 10.

Improper input validation in Apple macOS

CVE-2023-42826

The issue was addressed with improved checks. This issue is fixed in macOS Sonoma 14. Processing a file may lead to arbitrary code execution.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2024-01-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.002 (13.8th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Apple macOS — versions unspecified

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

support.apple.com/en-us/HT213940 (Release Notes, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-42826?: CVE-2023-42826 is a high-severity vulnerability in Apple macOS, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2024-01-10.
How severe is CVE-2023-42826?: High severity. CVSS v3 base score is 7.8 out of 10.