CVE-2020-16009: Google Chromium V8 Type Confusion Vulnerability
Vulnerability summary
CVE-2020-16009 is a high (CVSS 8.8) Out-of-bounds Write vulnerability in Google Chromium V8. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 48.29% chance of exploitation in the next 30 days, higher than 98.8% of scored vulnerabilities. 2 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 8 · Related 6Timeline
- 03-11-2020PublishedVulnerability first disclosed.
- 03-11-2021Added to CISA KEVGoogle Chromium V8 Type Confusion Vulnerability
- 03-05-2022CISA remediation dueApply updates per vendor instructions.
- 21-10-2025Last modifiedVulnerability information updated.
Description
Inappropriate implementation in V8 in Google Chrome prior to 86.0.4240.183 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
CVSS metrics
6 scores · 5 sources · 2 versions- OSV · UbuntuEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- OSV · NugetEcosystem advisory · calculated8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- NVDNIST8.8HighCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS trend
Probability
48.29%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 48.29% on 19-09-2026
Known exploited
Compare KEV catalogs
CISA KEVListed- Added
- 03-11-2021
- Federal due date
- 03-05-2022
CISA required action
Apply updates per vendor instructions. nvd.nist.gov/vuln/detail/CVE-2020-16009
Public exploits
2 foundExploit Reference (crbug.com)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Weaknesses
CWE · root cause- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
- CWE-843Access of Resource Using Incompatible Type ('Type Confusion')The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
Affected systems
NuGet4 products
- CefSharp.Common< 86.0.241
- CefSharp.WinForms< 86.0.241
- CefSharp.Wpf< 86.0.241
- CefSharp.Wpf.HwndHost< 86.0.241
Debian2 products
- chromium< 87.0.4280.88-0.1
- debian_linuxEOL10.0
Microsoft2 products
- edge< 86.0.622.63
- edge_chromium< 86.0.4240.183
Opensuse2 products
- backports_sle15.0:sp1 | 15.0:sp2
- leapEOL15.1 | 15.2
Cefsharp1 product
- cefsharp< 86.0.241
Fedoraproject1 product
- fedoraEOL32 | 33
Google1 product
- chrome≥ unspecified, < 86.0.4240.183 | < 86.0.4240.183
Ubuntu1 product
- chromium-browser< 86.0.4240.198-0ubuntu0.16.04.1 | < 86.0.4240.198-0ubuntu0.18.04.1
8 vendors · 14 products
References
19 links- chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.htmlX Refsource MISCREPORTWEBRelease NotesVendor Advisory
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.htmlVendor AdvisoryX Refsource SUSEWEBBroken LinkMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.htmlVendor AdvisoryX Refsource SUSEWEBBroken LinkMailing ListThird Party Advisory
- packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.htmlX Refsource MISCWEBExploitThird Party AdvisoryVDB Entry
www.debian.org/security/2021/dsa-4824Vendor AdvisoryX Refsource DEBIANWEBMailing ListThird Party Advisory- www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-16009Government ResourceUS Government Resource
Show all 19 references
- github.com/cefsharp/CefSharpPACKAGE