{"id":"CVE-2026-20942","title":"Microsoft Edge (Chromium-based) Spoofing Vulnerability","summary":"Improper restriction of rendered ui layers or frames in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-1021"],"vendor":"Microsoft","product":"Microsoft Edge (Chromium-based)","affected":["edge_chromium-based >= 1.0.0.0 < 156.0.4314.42"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-30T13:38:48.039402Z"},"published":"2026-10-29","updated":"2026-10-31","sourceUpdated":"2026-10-31T18:13:33.579Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-20942","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20942","label":"Microsoft Edge (Chromium-based) Spoofing Vulnerability"}],"tags":["cve.org"],"epss":0.00628,"epssPercentile":0.50363,"ingestedAt":"2026-11-05T18:28:50.643Z","slug":"CVE-2026-20942","body":"## Overview\n\nImproper restriction of rendered ui layers or frames in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.\n\n## Affected\n\n- `edge_chromium-based >= 1.0.0.0 < 156.0.4314.42`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":24,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}