{"id":"CVE-2026-88078","aliases":["EUVD-2026-112940","GHSA-hgfw-55vg-gxmm"],"status":"published","title":"Microsoft Edge (Chromium-based) Spoofing Vulnerability","description":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","severity":{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00292,"percentile":0.22078,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-10-29T15:21:52Z","modified":"2026-11-03T17:59:57Z","products":[{"vendor":"microsoft","product":"edge_chromium"},{"vendor":"microsoft","product":"microsoft edge (chromium-based)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88078","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88078"},{"url":"https://github.com/advisories/GHSA-hgfw-55vg-gxmm"}],"sources":{"cve":[{"id":"CVE-2026-88078","title":"Microsoft Edge (Chromium-based) Spoofing Vulnerability","description":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-10-29T15:21:52.37Z","modified":"2026-11-10T20:47:23.84Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C","level":"medium","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-10T22:18:29.471829Z"}],"euvd":[{"id":"EUVD-2026-112940","description":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-10-29T15:21:52Z","modified":"2026-11-10T20:47:23Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-10T22:23:55.284051Z"}],"ghsa":[{"id":"GHSA-hgfw-55vg-gxmm","title":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an...","description":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-10-29T18:31:06Z","modified":"2026-10-29T18:31:14Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:14:40.528345Z"}],"nvd":[{"id":"CVE-2026-88078","description":"Improper verification of cryptographic signature in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.","status":"published","published":"2026-10-29T16:19:53.44Z","modified":"2026-11-03T17:59:57.027Z","cvss":[{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-03T20:18:18.319452Z"}]}}