What is CVE-2020-6503?

CVE-2020-6503 is a medium-severity vulnerability in Google Chrome, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 6.5/10. Published 2020-06-03.

How severe is CVE-2020-6503?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Information disclosure in Google Chrome

CVE-2020-6503

Inappropriate implementation in accessibility in Google Chrome prior to 74.0.3729.108 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page.

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

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (53.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Google Chrome — versions unspecified

Weakness classification (CWE)

CWE-209 — Generation of Error Message Containing Sensitive Information

References

chromereleases.googleblog.com/2019/04/stable-channel-update-for-desktop_23.html (Vendor Advisory)
crbug.com/639322 (Exploit, Patch, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2020-6503?: CVE-2020-6503 is a medium-severity vulnerability in Google Chrome, classified under Generation of Error Message Containing Sensitive Information. CVSS score: 6.5/10. Published 2020-06-03.
How severe is CVE-2020-6503?: Medium severity. CVSS v3 base score is 6.5 out of 10.