What is CVE-2026-10886?

CVE-2026-10886 is a critical-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 9.6/10. Published 2026-06-04.

How severe is CVE-2026-10886?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Use After Free in Apple macOS

CVE-2026-10886

Use after free in FileSystem in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Critical)

Vulnerability class: Use-After-Free

Published 2026-06-04 · last modified 2026-07-22.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.062 (93.3th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.3% 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: 0.062 · change: +0.058

Affected products

Weakness classification (CWE)

CWE-416 — Use After Free

References

chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/505096898 (Permissions Required)

Frequently asked questions

What is CVE-2026-10886?: CVE-2026-10886 is a critical-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 9.6/10. Published 2026-06-04.
How severe is CVE-2026-10886?: Critical severity. CVSS v3 base score is 9.6 out of 10.