{"id":"CVE-2026-21223","aliases":["EUVD-2026-3111","GHSA-wfh6-52w8-8gcj"],"status":"published","title":"Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability","description":"Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.","severity":{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00272,"percentile":0.19736,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2026-01-16T21:28:30Z","modified":"2026-07-30T20:47:30Z","products":[{"vendor":"microsoft","product":"edge_chromium"},{"vendor":"microsoft","product":"microsoft edge (chromium-based)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21223","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21223"},{"url":"https://github.com/advisories/GHSA-wfh6-52w8-8gcj"}],"sources":{"cve":[{"id":"CVE-2026-21223","title":"Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability","description":"Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-01-16T21:28:30.158Z","modified":"2026-07-30T20:47:30.062Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"},{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-3111","description":"Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-01-16T21:28:30Z","modified":"2026-07-30T20:47:30Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:26.773248Z"}],"ghsa":[{"id":"GHSA-wfh6-52w8-8gcj","title":"Microsoft Edge Elevation Service exposes a privileged COM interface that inadequately validates...","description":"Microsoft Edge Elevation Service exposes a privileged COM interface that inadequately validates the privileges of the calling process. A standard (non‑administrator) local user can invoke the IElevatorEdge interface method LaunchUpdateCmdElevatedAndWait, causing the service to execute privileged update commands as LocalSystem.\nThis allows a non‑administrator to enable or disable Windows Virtualization‑Based Security (VBS) by modifying protected system registry keys under HKLM\\SYSTEM\\CurrentControlSet\\Control\\DeviceGuard. Disabling VBS weakens critical platform protections such as Credential Guard, Hypervisor‑protected Code Integrity (HVCI), and the Secure Kernel, resulting in a security feature bypass.","status":"published","published":"2026-01-17T00:30:24Z","modified":"2026-01-17T00:30:30Z","cvss":[{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T15:05:39.318179Z"}],"nvd":[{"id":"CVE-2026-21223","description":"Improper privilege management in Microsoft Edge (Chromium-based) allows an authorized attacker to bypass a security feature locally.","status":"published","published":"2026-01-16T22:16:25.983Z","modified":"2026-06-17T10:18:18.403Z","cvss":[{"version":"3.1","score":7.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":5.1,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:12:04.066712Z"}]}}