{"affected":[{"conditional":false,"product":"edge_chromium","source":"NVD","vendor":"microsoft","versions":[{"lessThan":"154.0.4258.48","status":"affected","version":"*","versionType":"custom"}]}],"cpeConfigurations":[{"negate":false,"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*","versionEndExcluding":"154.0.4258.48","vulnerable":true}],"negate":false,"operator":"OR"}],"operator":"OR"}],"cveId":"CVE-2026-83831","cwes":["CWE-415"],"description":"Double free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.","epss":{"date":"2026-11-02","percentile":0.55533,"score":0.00767},"exploits":[],"kev":null,"metrics":[{"score":8.8,"severity":"high","source":"NVD: secure@microsoft.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1793729365067,"publishedAt":1793135948030,"references":[{"source":"secure@microsoft.com","tags":["Patch","Vendor Advisory"],"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83831"}],"remediation":[{"kind":"fix","source":"secure@microsoft.com","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-2026-83831"}],"revision":"420110581825c2ce0e188054520dfa1de0accaedf168412536769bd029e997a9","sources":[{"modifiedAt":1793729365067,"name":"NVD","retrievedAt":1793729871023,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83831"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793685167065,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-83831"}],"ssvc":{"assessedAt":1793246219466,"automatable":"no","exploitation":"none","source":"NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0","technicalImpact":"total"},"status":"published","title":"CVE-2026-83831","updatedAt":1793729871023}