{"id":"CVE-2009-0077","aliases":["EUVD-2009-0086","GHSA-9rc2-2223-5qcp"],"status":"published","title":"The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition ...","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.\"","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.78496,"percentile":0.99588,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2009-04-15T03:49:00Z","modified":"2026-06-16T23:04:13Z","products":[{"vendor":"microsoft","product":"forefront_threat_management_gateway"},{"vendor":"microsoft","product":"internet_security_and_acceleration_server"}],"references":[{"url":"http://www.securitytracker.com/id?1022045","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-016","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://osvdb.org/53636","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-104A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"http://www.vupen.com/english/advisories/2009/1030","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"]},{"url":"http://secunia.com/advisories/34687","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"]},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6068","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-0077"},{"url":"https://github.com/advisories/GHSA-9rc2-2223-5qcp"}],"sources":{"cve":[{"id":"CVE-2009-0077","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.\"","status":"published","published":"2009-04-15T03:49:00Z","modified":"2024-08-07T04:24:16.985Z","updated_at":"2026-11-02T14:33:25.896677Z"}],"euvd":[{"id":"EUVD-2009-0086","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.\"","status":"published","published":"2009-04-15T03:49:00Z","modified":"2024-08-07T04:24:16Z","updated_at":"2026-11-03T01:39:27.659956Z"}],"ghsa":[{"id":"GHSA-9rc2-2223-5qcp","title":"The firewall engine in Microsoft Forefront Threat Management Gateway, Medium Business Edition ...","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.\"","status":"published","published":"2022-05-02T03:12:41Z","modified":"2023-01-31T05:07:00Z","updated_at":"2026-11-02T14:49:07.796746Z"}],"nvd":[{"id":"CVE-2009-0077","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.\"","status":"published","published":"2009-04-15T08:00:00.267Z","modified":"2026-06-16T23:04:13.02Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:01:34.44527Z"}]}}