What is CVE-2026-5273?

CVE-2026-5273 is a medium-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 6.3/10. Published 2026-04-01.

How severe is CVE-2026-5273?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Use After Free in Apple Macos

CVE-2026-5273

Use after free in CSS in Google Chrome prior to 146.0.7680.178 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Use-After-Free

EPSS: 0.000 (13.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.

Affected products

Apple Macos
Google Chrome — versions 146.0.7680.178
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-5273?: CVE-2026-5273 is a medium-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 6.3/10. Published 2026-04-01.
How severe is CVE-2026-5273?: Medium severity. CVSS v3 base score is 6.3 out of 10.