{"cve":"CVE-2009-0041","nvd":{"published":"2009-01-14T23:30:00.187","modified":"2026-06-16T23:04:09.207","status":"Modified","description":"IAX2 in Asterisk Open Source 1.2.x before 1.2.31, 1.4.x before 1.4.23-rc4, and 1.6.x before 1.6.0.3-rc2; Business Edition A.x.x, B.x.x before B.2.5.7, C.1.x.x before C.1.10.4, and C.2.x.x before C.2.1.2.1; and s800i 1.2.x before 1.3.0 responds differently to a failed login attempt depending on whether the user account exists, which allows remote attackers to enumerate valid usernames.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-200"],"references":["http://downloads.digium.com/pub/security/AST-2009-001.html","http://secunia.com/advisories/33453","http://secunia.com/advisories/34982","http://secunia.com/advisories/37677","http://security.gentoo.org/glsa/glsa-200905-01.xml"],"products":["asterisk:asterisk_business_edition","asterisk:open_source","asterisk:s800i_appliance"],"source":"nvd","synced_at":"2026-10-19T19:53:23.791937413+00:00"},"epss":{"cve":"CVE-2009-0041","score":0.02715,"percentile":0.8601,"date":"2026-10-31"},"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."]}