{"cve":"CVE-2009-0077","nvd":{"published":"2009-04-15T08:00:00.267","modified":"2026-06-16T23:04:13.020","status":"Modified","description":"The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition (TMG MBE); and Internet Security and Acceleration (ISA) Server 2004 SP3, 2006, 2006 Supportability Update, and 2006 SP1; does not properly manage the session state of web listeners, which allows remote attackers to cause a denial of service (many stale sessions) via crafted packets, aka \"Web Proxy TCP State Limited Denial of Service Vulnerability.\"","cvss_v4":null,"cvss_v3":null,"cwes":[],"references":["http://osvdb.org/53636","http://secunia.com/advisories/34687","http://www.securitytracker.com/id?1022045","http://www.us-cert.gov/cas/techalerts/TA09-104A.html","http://www.vupen.com/english/advisories/2009/1030"],"products":["microsoft:forefront_threat_management_gateway","microsoft:internet_security_and_acceleration_server"],"source":"nvd","synced_at":"2026-10-19T19:54:07.895733559+00:00"},"epss":{"cve":"CVE-2009-0077","score":0.78496,"percentile":0.99584,"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."]}