What is CVE-2020-6453?

CVE-2020-6453 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-06-03.

How severe is CVE-2020-6453?

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

Buffer overflow in Google Chrome

CVE-2020-6453

Inappropriate implementation in V8 in Google Chrome prior to 80.0.3987.162 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.

Vulnerability class: Buffer Overflow

Published 2020-06-03 · last modified 2026-06-17.

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: 0.009 (57.7th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Google Chrome — versions unspecified

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_31.html (Vendor Advisory)
crbug.com/1065094 (Permissions Required)

Frequently asked questions

What is CVE-2020-6453?: CVE-2020-6453 is a high-severity vulnerability in Google Chrome, classified under Out-of-bounds Write. CVSS score: 8.8/10. Published 2020-06-03.
How severe is CVE-2020-6453?: High severity. CVSS v3 base score is 8.8 out of 10.