What is CVE-2025-13638?

CVE-2025-13638 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 8.8/10. Published 2025-12-02.

How severe is CVE-2025-13638?

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

Use After Free in Apple macOS

CVE-2025-13638

Use after free in Media Stream in Google Chrome prior to 143.0.7499.41 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: Low)

Vulnerability class: Use-After-Free

Published 2025-12-02 · last modified 2026-09-25.

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: 0.003 (15.9th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.9% 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: 0.003 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-416 — Use After Free

References

chromereleases.googleblog.com/2025/12/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/448046109 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2025-13638?: CVE-2025-13638 is a high-severity vulnerability in Apple macOS, classified under Use After Free. CVSS score: 8.8/10. Published 2025-12-02.
How severe is CVE-2025-13638?: High severity. CVSS v3 base score is 8.8 out of 10.