{"id":"CVE-2026-33819","aliases":["EUVD-2026-25311","GHSA-97j9-4xhc-69qj"],"status":"published","title":"Microsoft Bing Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0084,"percentile":0.58285,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-04-23T21:35:50Z","modified":"2026-10-26T21:10:00Z","products":[{"vendor":"microsoft","product":"bing"},{"vendor":"microsoft","product":"microsoft bing"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33819","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33819"},{"url":"https://github.com/advisories/GHSA-97j9-4xhc-69qj"}],"sources":{"cve":[{"id":"CVE-2026-33819","title":"Microsoft Bing Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-04-23T21:35:50.367Z","modified":"2026-10-15T15:52:11.787Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:20:08.009733Z"}],"euvd":[{"id":"EUVD-2026-25311","description":"Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-04-23T21:35:50Z","modified":"2026-10-15T15:52:11Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"critical"}],"updated_at":"2026-11-02T17:00:13.422137Z"}],"ghsa":[{"id":"GHSA-97j9-4xhc-69qj","title":"Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute...","description":"Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-04-24T00:31:51Z","modified":"2026-04-24T00:31:58Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:07:37.11234Z"}],"nvd":[{"id":"CVE-2026-33819","description":"Deserialization of untrusted data in Microsoft Bing allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-04-23T22:16:37.817Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"3.1","score":10,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:12:15.867234Z"}]}}