What is CVE-2026-7940?

CVE-2026-7940 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.8/10. Published 2026-05-06.

How severe is CVE-2026-7940?

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

Use After Free in Apple Macos

CVE-2026-7940

Use after free in V8 in Google Chrome prior to 148.0.7778.96 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity…

Vulnerability class: Use-After-Free

EPSS: 0.000 (5.5th percentile) — read the EPSS interpretation.

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.

Affected products

Apple Macos
Google Chrome — versions 148.0.7778.96
Linux Linux_kernel
Microsoft Windows

Weakness classification (CWE)

CWE-416 — Use After Free

References

chrome-cve-admin@google.com (Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required, Issue Tracking)

Frequently asked questions

What is CVE-2026-7940?: CVE-2026-7940 is a high-severity vulnerability in Apple Macos, classified under Use After Free. CVSS score: 8.8/10. Published 2026-05-06.
How severe is CVE-2026-7940?: High severity. CVSS v3 base score is 8.8 out of 10.