What is CVE-2026-5282?

CVE-2026-5282 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-04-01.

How severe is CVE-2026-5282?

High severity. CVSS v3 base score is 8.1 out of 10.

Out-of-bounds Read in Apple macOS

CVE-2026-5282

Out of bounds read in WebCodecs in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to perform an out of bounds memory read via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

EPSS: 0.002 (9.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

Affected products

Apple Macos
Google Chrome — versions 146.0.7680.178
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

chrome-cve-admin@google.com (Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-5282?: CVE-2026-5282 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2026-04-01.
How severe is CVE-2026-5282?: High severity. CVSS v3 base score is 8.1 out of 10.