Inappropriate implementation in V8
CISA confirms exploitation of this vulnerability in real attacks. Prioritise checking whether your application is affected. CISA KEV · CC0 1.0
CVE-2020-16009: Inappropriate implementation in V8
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-16009
Google is aware of reports that exploits for CVE-2020-16009 exist in the wild.
Allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
There is currently little to no public information on the issue other than it has been flagged as High severity.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| .NET (NuGet) | CefSharp.Common | < 86.0.241 | 86.0.241 |
| .NET (NuGet) | CefSharp.WinForms | < 86.0.241 | 86.0.241 |
| .NET (NuGet) | CefSharp.Wpf | < 86.0.241 | 86.0.241 |
| .NET (NuGet) | CefSharp.Wpf.HwndHost | < 86.0.241 | 86.0.241 |
References
- https://github.com/cefsharp/CefSharp/security/advisories/GHSA-m7mf-48hp-5qmr
- https://nvd.nist.gov/vuln/detail/CVE-2020-16009
- https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop.html
- https://crbug.com/1143772
- https://github.com/cefsharp/CefSharp
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S4XYJ7B6OXHZNYSA5J3DBUOFEC6WCAGW
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SC3U3H6AISVZB5PLZLLNF4HMQ4UFFL7M
- https://security.gentoo.org/glsa/202011-12
- https://www.debian.org/security/2021/dsa-4824
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00016.html
- http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00017.html
- http://packetstormsecurity.com/files/159974/Chrome-V8-Turbofan-Type-Confusion.html
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-787- Platform
- .NET (NuGet)
- Package
CefSharp.Common, CefSharp.WinForms, CefSharp.Wpf- Disclosed
- 02.12.2020
- Updated
- 11.10.2026 11:23
Sources and licenses
OSV / GitHub Advisory Database - GHSA-m7mf-48hp-5qmr - CC BY 4.0
Vulnerability history: CefSharp.Wpf.HwndHost
All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 6
- First → latest
- 10.2020 04.2025
- Without a fix
- 0
- Exploited in attacks
- 5
Severity breakdown
- High 5
- Medium 1
Disclosures per year
- 2020: 4
- 2021: 0
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 1
- 2026: 0
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