{"id":"CVE-2020-16017","aliases":["GHSA-gvqv-779r-4jgp"],"url":"https://o3.security/vulnerability/CVE-2020-16017","summary":"Use after free in CefSharp","details":"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.","published":"2021-01-08T19:15:12.727Z","modified":"2026-03-14T10:06:41.283182Z","cvss":{"score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},"epss":{"score":0.02747,"percentile":0.85239,"asOf":"2026-09-08"},"cisaKev":null,"exploitsKnown":3,"affectedPackages":[{"ecosystem":"NuGet","name":"CefSharp.Common","fixedVersion":"86.0.241"},{"ecosystem":"NuGet","name":"CefSharp.Wpf","fixedVersion":"86.0.241"},{"ecosystem":"NuGet","name":"CefSharp.WinForms","fixedVersion":"86.0.241"},{"ecosystem":"NuGet","name":"CefSharp.Wpf.HwndHost","fixedVersion":"86.0.241"}],"fix":null,"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-16017"},{"type":"ADVISORY","url":"https://chromereleases.googleblog.com/2020/11/stable-channel-update-for-desktop_11.html"},{"type":"REPORT","url":"https://crbug.com/1146709"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-03-14T10:06:41.283182Z"}}