{"cve":"CVE-2004-0847","nvd":{"published":"2004-11-03T05:00:00.000","modified":"2026-06-16T22:06:30.907","status":"Modified","description":"The Microsoft .NET forms authentication capability for ASP.NET allows remote attackers to bypass authentication for .aspx files in restricted directories via a request containing a (1) \"\\\" (backslash) or (2) \"%5C\" (encoded backslash), aka \"Path Validation Vulnerability.\"","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-22"],"references":["http://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.html","http://sourceforge.net/mailarchive/forum.php?thread_id=5671607&forum_id=24754","http://www.kb.cert.org/vuls/id/283646","http://www.securityfocus.com/bid/11342","http://www.us-cert.gov/cas/techalerts/TA05-039A.html"],"products":["microsoft:asp.net"],"source":"nvd","synced_at":"2026-10-19T19:37:11.487553034+00:00"},"epss":{"cve":"CVE-2004-0847","score":0.75702,"percentile":0.99522,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}