Buffer overflow in Google Chrome
CVE-2026-8558
Out of bounds write in Fonts in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.004 (34.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.2% 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: 0.004 · change: +0.001
Affected products
- Google Chrome — versions 148.0.7778.168
Weakness classification (CWE)
References
- chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html (Product, Vendor Advisory)
- issues.chromium.org/issues/503425922 (Permissions Required)
Frequently asked questions
- What is CVE-2026-8558?
- CVE-2026-8558 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2026-05-14.
- How severe is CVE-2026-8558?
- High severity. CVSS v3 base score is 8.8 out of 10.