{"cve":"CVE-2011-3140","nvd":{"published":"2011-08-15T21:55:03.283","modified":"2026-06-16T23:32:44.243","status":"Modified","description":"IBM Web Application Firewall, as used on the G400 IPS-G400-IB-1 and GX4004 IPS-GX4004-IB-2 appliances with update 31.030, does not properly handle query strings with multiple instances of the same parameter, which allows remote attackers to bypass intended intrusion prevention by dividing a dangerous parameter value into substrings, as demonstrated by a SQL statement that is split across multiple iid parameters and then sent to a .aspx file on an IIS web server.","cvss_v4":null,"cvss_v3":null,"cwes":["CWE-264"],"references":["http://securityreason.com/securityalert/8339","http://securitytracker.com/id?1025683","http://www.iss.net/security_center/reference/vuln/HTTP_Parameter_Abuse.htm","http://www.securityfocus.com/archive/1/518556/100/0/threaded","http://www.securityfocus.com/bid/48370"],"products":["ibm:g400_ips-g400-ib-1_appliance","ibm:gx4004_ips-gx4004-ib-2_appliance","ibm:web_application_firewall"],"source":"nvd","synced_at":"2026-10-19T19:58:50.521460154+00:00"},"epss":{"cve":"CVE-2011-3140","score":0.02151,"percentile":0.82147,"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."]}