What is CVE-2026-9960?

CVE-2026-9960 is a high-severity vulnerability in Apple macOS, classified under CWE-472. CVSS score: 7.5/10. Published 2026-05-28.

How severe is CVE-2026-9960?

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

Vulnerability in Apple macOS

CVE-2026-9960

Integer overflow in PDFium in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to execute arbitrary code inside a sandbox via a crafted font file. (Chromium security severity: High)

Published 2026-05-28 · last modified 2026-07-21.

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.

EPSS exploit prediction

EPSS: 0.003 (24.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001

Affected products

Weakness classification (CWE)

CWE-472

References

chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304… (Release Notes)
issues.chromium.org/issues/504573260 (Permissions Required)

Frequently asked questions

What is CVE-2026-9960?: CVE-2026-9960 is a high-severity vulnerability in Apple macOS, classified under CWE-472. CVSS score: 7.5/10. Published 2026-05-28.
How severe is CVE-2026-9960?: High severity. CVSS v3 base score is 7.5 out of 10.