What is CVE-2021-21118?

CVE-2021-21118 is a high-severity vulnerability in Google Chrome, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2021-02-09.

How severe is CVE-2021-21118?

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

Buffer overflow in Google Chrome

CVE-2021-21118

Insufficient data validation in V8 in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to potentially perform out of bounds memory access via a crafted HTML page.

Vulnerability class: Buffer Overflow

EPSS: 0.168 (96.7th percentile) — read the EPSS interpretation.

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.

Affected products

Google Chrome — versions unspecified
Microsoft Edge_chromium

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

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

Frequently asked questions

What is CVE-2021-21118?: CVE-2021-21118 is a high-severity vulnerability in Google Chrome, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2021-02-09.
How severe is CVE-2021-21118?: High severity. CVSS v3 base score is 8.8 out of 10.