What is CVE-2025-13639?

CVE-2025-13639 is a high-severity vulnerability in Apple macOS, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2025-12-02.

How severe is CVE-2025-13639?

High severity. CVSS v3 base score is 8.1 out of 10.

XSS in Apple macOS

CVE-2025-13639

Inappropriate implementation in WebRTC in Google Chrome prior to 143.0.7499.41 allowed a remote attacker to perform arbitrary read/write via a crafted HTML page. (Chromium security severity: Low)

Vulnerability class: XSS (Cross-Site Scripting)

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

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (15.2th percentile), scored 2026-10-02.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 15th percentile — 15.2% 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-79 — Cross-site Scripting

References

chromereleases.googleblog.com/2025/12/stable-channel-update-for-desktop.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/448408148 (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2025-13639?: CVE-2025-13639 is a high-severity vulnerability in Apple macOS, classified under Cross-site Scripting. CVSS score: 8.1/10. Published 2025-12-02.
How severe is CVE-2025-13639?: High severity. CVSS v3 base score is 8.1 out of 10.