{"id":"CVE-2026-97801","aliases":["EUVD-2026-100458","GHSA-pjfw-qhmc-7gc7"],"status":"published","title":".NET Framework Tampering Vulnerability","description":"Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00734,"percentile":0.54675,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1287"],"published":"2026-10-13T19:01:45Z","modified":"2026-10-31T18:13:31Z","products":[{"vendor":"microsoft","product":"microsoft .net framework 3.5"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.6.2/4.7/4.7.1/4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.8"},{"vendor":"microsoft","product":"microsoft .net framework 3.5 and 4.8.1"},{"vendor":"microsoft","product":"microsoft .net framework 4.6.2/4.7/4.7.1/4.7.2"},{"vendor":"microsoft","product":"microsoft .net framework 4.8"},{"vendor":"microsoft","product":"microsoft .net framework 4.8.1"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97801","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-97801"},{"url":"https://github.com/advisories/GHSA-pjfw-qhmc-7gc7"}],"sources":{"cve":[{"id":"CVE-2026-97801","title":".NET Framework Tampering Vulnerability","description":"Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-10-13T19:01:45.603Z","modified":"2026-10-31T18:13:31.543Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T13:44:18.366073Z"}],"euvd":[{"id":"EUVD-2026-100458","description":"Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-10-13T19:01:45Z","modified":"2026-10-31T18:13:31Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T16:58:50.118267Z"}],"ghsa":[{"id":"GHSA-pjfw-qhmc-7gc7","title":"Improper validation of specified type of input in .NET Framework allows an unauthorized attacker...","description":"Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-10-13T21:37:15Z","modified":"2026-10-13T21:37:16Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T15:13:20.228797Z"}],"nvd":[{"id":"CVE-2026-97801","description":"Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.","status":"published","published":"2026-10-13T19:22:18.023Z","modified":"2026-10-13T23:19:33.74Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-1287"],"updated_at":"2026-11-02T14:12:58.630796Z"}]}}