CVE-2020-16017Google Chrome Use-After-Free Vulnerability

Use after free in site isolation in Google Chrome prior to 86.0.4240.198 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page.

9.6 CRITICALEPSS 2.73%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 02:57 UTC

OverviewCVSS details

9.6CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Jan 8, 2021
Assigner: Chrome

Affected

Chrome (Google)

Versions: before 86.0.4240.198
Fixed in: 86.0.4240.198

Exploitation

Public exploit: None listed
CISA KEV: Listed · Nov 3, 2021
KEV due date: May 3, 2022
Ransomware use: Unknown
SSVC: Exploitation active · Automatable no · Impact total

EPSS · FIRST, scored Nov 7

2.73%chance of exploitation in 30 days

Higher than 86.16% of CVEs

CVSS 3.1 · NVD

9.6Critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: Required
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

6.8Medium

AV:N/AC:M/Au:N/C:P/I:P/A:P

Attack vector: Network
Attack complexity: Medium
Authentication: None
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.6	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
6.8	MEDIUM	2.0NVD	AV:N/AC:M/Au:N/C:P/I:P/A:P

CISA required action

⚡ Known exploited · remediation due May 3, 2022

Apply updates per vendor instructions.

Details

CVE ID: CVE-2020-16017
Status: Analyzed
Assigner (CNA): Chrome
Published: Jan 8, 2021
Last modified: 2026-06-17 02:57 UTC
Weaknesses: CWE-416

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 09:17 UTC.