What is CVE-2026-3542?

CVE-2026-3542 is a high-severity vulnerability in Apple macOS, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-03-04.

How severe is CVE-2026-3542?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Apple macOS

CVE-2026-3542

Inappropriate implementation in WebAssembly in Google Chrome prior to 145.0.7632.159 allowed a remote attacker to perform out of bounds memory access via a crafted HTML page. (Chromium security severity: High)

Published 2026-03-04 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (33.4th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/485152421 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-3542?: CVE-2026-3542 is a high-severity vulnerability in Apple macOS, classified under Improper Access Control. CVSS score: 8.8/10. Published 2026-03-04.
How severe is CVE-2026-3542?: High severity. CVSS v3 base score is 8.8 out of 10.