{"affected":[{"product":"Microsoft Edge (Chromium-based)","source":"CNA: microsoft","vendor":"Microsoft","versions":[{"lessThan":"151.0.4129.59","status":"affected","version":"1.0.0.0","versionType":"custom"}]}],"cveId":"CVE-2026-66311","cwes":["CWE-862"],"description":"Missing authorization in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform tampering locally.","epss":{"date":"2026-11-10","percentile":0.35076,"score":0.00405},"exploits":[],"kev":null,"metrics":[{"score":6.2,"severity":"medium","source":"CNA: microsoft","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794350462664,"publishedAt":1785797873525,"references":[{"source":"CNA: microsoft","tags":["vendor-advisory","patch"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66311"}],"remediation":[{"kind":"fix","source":"CNA: microsoft","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66311"}],"revision":"b8e013ed1b12633b27de7a01833786fa2abc123d9d07c417670372a654fad832","sources":[{"modifiedAt":1794350462664,"name":"CNA: microsoft","retrievedAt":1794353783685,"url":"https://www.cve.org/CVERecord?id=CVE-2026-66311"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794353788183,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-66311"}],"ssvc":{"assessedAt":1785853186424,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Microsoft Edge (Chromium-based) Tampering Vulnerability","updatedAt":1794353788183}