What is CVE-2026-8557?

CVE-2026-8557 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 7.5/10. Published 2026-05-14.

How severe is CVE-2026-8557?

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

Use After Free in Google Chrome

CVE-2026-8557

Use after free in Accessibility in Google Chrome prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to perform privilege escalation via a crafted HTML page. (Chromium security severity: High)

Vulnerability class: Use-After-Free

EPSS: 0.001 (22.3th percentile) — read the EPSS interpretation.

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.

Affected products

Google Chrome — versions 148.0.7778.168

Weakness classification (CWE)

CWE-416 — Use After Free

References

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

Frequently asked questions

What is CVE-2026-8557?: CVE-2026-8557 is a high-severity vulnerability in Google Chrome, classified under Use After Free. CVSS score: 7.5/10. Published 2026-05-14.
How severe is CVE-2026-8557?: High severity. CVSS v3 base score is 7.5 out of 10.