What is CVE-2026-9963?

CVE-2026-9963 is a high-severity vulnerability in Apple Iphone_os, classified under CWE-457. CVSS score: 7.5/10. Published 2026-05-28.

How severe is CVE-2026-9963?

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

Vulnerability in Apple Iphone_os

CVE-2026-9963

Uninitialized Use in iOS in Google Chrome on iOS prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium securit…

EPSS: 0.001 (27.9th percentile) — read the EPSS interpretation.

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 Iphone_os
Google Chrome — versions 148.0.7778.216

Weakness classification (CWE)

CWE-457

References

chrome-cve-admin@google.com (Release Notes)
chrome-cve-admin@google.com (Permissions Required, Vendor Advisory)

Frequently asked questions

What is CVE-2026-9963?: CVE-2026-9963 is a high-severity vulnerability in Apple Iphone_os, classified under CWE-457. CVSS score: 7.5/10. Published 2026-05-28.
How severe is CVE-2026-9963?: High severity. CVSS v3 base score is 7.5 out of 10.