CVE-2020-16017

CRITICALNVD 9.69.6—

9.6

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.

CVSS v3: 9.6
EG Score: 9.6(high)
EPSS: 95.8%
KEV: ⚠ Exploited

Published

January 8, 2021

Last Modified

October 24, 2025

References (5)

chrome-cve-admin@googlehttps://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_11.html
chrome-cve-admin@googlehttps://crbug.com/1146709
af854a3a-2127-422b-91ae-364da2661108https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_11.html
af854a3a-2127-422b-91ae-364da2661108https://crbug.com/1146709
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-16017

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
redhat	chromium-browser-0:86.0.4240.198-1.el6_10	2020-11-23	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 1 ecosystem)

NuGet(4)

Package	Vulnerable range	Fixed in	Dependents
CefSharp.Common	31.0.0-pre1 ... 86.0.240-pre (87 versions)	86.0.241	—
CefSharp.WinForms	1.25.3 ... 86.0.240-pre (86 versions)	86.0.241	—
CefSharp.Wpf	1.25.2-perlun0 ... 86.0.240-pre (94 versions)	86.0.241	—
CefSharp.Wpf.HwndHost	83.4.20-pre, 84.4.10, 85.3.121, 85.3.130	86.0.241	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-416Use After Free

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Red HatRHSA-2020:5165IMPORTANT2020-11-11
RHSA-2020:5165 — Important

Data Freshness Timeline

(refreshed 7× in last 7d / 7× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:39 UTCepss_batch
2026-05-26 19:15 UTCEG score recompute
2026-05-26 19:15 UTCVendor advisory
2026-05-26 19:13 UTCkev_newly_listed
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-24 16:48 UTCepss_batch

Frequently asked(6)

What is CVE-2020-16017?

CVE-2020-16017 is a critical vulnerability published on January 8, 2021. 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.

When was CVE-2020-16017 disclosed?

CVE-2020-16017 was first published in the National Vulnerability Database on January 8, 2021, with the most recent update on October 24, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-16017 actively exploited?

Yes. CISA added CVE-2020-16017 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting Google Chrome. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-16017?

CVE-2020-16017 has a CVSS v3 base score of 9.6 (NVD).

Which products are affected by CVE-2020-16017?

CVE-2020-16017 affects Google Chrome. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-16017?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-16017, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-16017

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CVE-2020-16017

Published

Last Modified

References (5)

Patch Availability(1)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-16017?

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Same CWE

CVE-2020-16017

📅 Published

🔄 Last Modified

🔗 References (5)

Patch Availability(1)

Affected Packages

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-16017?

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