What is CVE-2026-12455?

CVE-2026-12455 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 7.5/10. Published 2026-06-17.

How severe is CVE-2026-12455?

High severity. CVSS v3 base score is 7.5 out of 10.

Use After Free in Apple Macos

CVE-2026-12455

Use after free in Tab Strip in Google Chrome prior to 149.0.7827.155 allowed a remote attacker who convinced a user to engage in specific UI gestures to potentially exploit heap corruption via a crafted HTML page. (Chromium security severi…

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Apple Macos
Google Chrome — versions 149.0.7827.155
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)

Frequently asked questions

What is CVE-2026-12455?: CVE-2026-12455 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 7.5/10. Published 2026-06-17.
How severe is CVE-2026-12455?: High severity. CVSS v3 base score is 7.5 out of 10.