What is CVE-2025-14766?

CVE-2025-14766 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2025-12-16.

How severe is CVE-2025-14766?

High severity. CVSS v3 base score is 8.8 out of 10.

Out-of-bounds Read in Apple macOS

CVE-2025-14766

Out of bounds read and write in V8 in Google Chrome prior to 143.0.7499.147 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Buffer Overflow

Published 2025-12-16 · last modified 2026-09-30.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.032 (87.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 87.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.032 · newest: 0.032 · change: +0.001

Affected products

Weakness classification (CWE)

References

chromereleases.googleblog.com/2025/12/stable-channel-update-for-desktop_16.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/466786677 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2025-14766?: CVE-2025-14766 is a high-severity vulnerability in Apple macOS, classified under Out-of-bounds Read. CVSS score: 8.8/10. Published 2025-12-16.
How severe is CVE-2025-14766?: High severity. CVSS v3 base score is 8.8 out of 10.