What is CVE-2026-87578?

CVE-2026-87578 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 8.3/10. Published 2026-09-09.

How severe is CVE-2026-87578?

High severity. CVSS v3 base score is 8.3 out of 10.

Use After Free in Google Chrome

CVE-2026-87578

Use after free in Receiver in Google Chrome prior to 153.0.8010.36 allowed an adjacent attacker to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: High)

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Google Chrome

Weakness classification (CWE)

CWE-416 — Use After Free

References

chrome-cve-admin@google.com (Release Notes, Vendor Advisory)
chrome-cve-admin@google.com (Permissions Required)

Frequently asked questions

What is CVE-2026-87578?: CVE-2026-87578 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 8.3/10. Published 2026-09-09.
How severe is CVE-2026-87578?: High severity. CVSS v3 base score is 8.3 out of 10.