{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-88078","sourceIdentifier":"secure@microsoft.com","published":"2026-10-29T16:19:53.440","lastModified":"2026-11-03T17:59:57.027","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network."}],"affected":[{"source":"secure@microsoft.com","affectedData":[{"vendor":"Microsoft","product":"Microsoft Edge (Chromium-based)","versions":[{"version":"1.0.0.0","lessThan":"156.0.4314.42","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"secure@microsoft.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-30T13:37:57.479805Z","id":"CVE-2026-88078","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"secure@microsoft.com","type":"Secondary","description":[{"lang":"en","value":"CWE-347"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*","versionEndExcluding":"156.0.4314.42","matchCriteriaId":"6D4E90C5-6B23-496E-A07F-7A2839D323A9"}]}]}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88078","source":"secure@microsoft.com","tags":["Patch","Vendor Advisory"]}]}}