{"id":"CVE-2009-2453","aliases":["EUVD-2009-2448","GHSA-w4g4-v88p-5wq3"],"status":"published","title":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access...","description":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Advanced Edition filters, which allows attackers to bypass intended access restrictions via unknown vectors.","severity":{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.0143,"percentile":0.73195,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-264"],"published":"2009-07-14T14:00:00Z","modified":"2026-06-16T23:09:28Z","products":[{"vendor":"citrix","product":"presentation_server"},{"vendor":"citrix","product":"xenapp"}],"references":[{"url":"http://support.citrix.com/article/CTX118792","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor Advisory"]},{"url":"http://secunia.com/advisories/34865","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/1154","tags":["vdb-entry","x_refsource_VUPEN","x_transferred","Patch","Vendor Advisory"]},{"url":"http://www.securitytracker.com/id?1022114","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","Patch"]},{"url":"http://osvdb.org/53900","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www.securityfocus.com/bid/34691","tags":["vdb-entry","x_refsource_BID","x_transferred","Patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-2453"},{"url":"https://github.com/advisories/GHSA-w4g4-v88p-5wq3"}],"sources":{"cve":[{"id":"CVE-2009-2453","description":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Advanced Edition filters, which allows attackers to bypass intended access restrictions via unknown vectors.","status":"published","published":"2009-07-14T14:00:00Z","modified":"2024-09-16T18:29:10.452Z","updated_at":"2026-11-02T14:33:23.041383Z"}],"euvd":[{"id":"EUVD-2009-2448","description":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Advanced Edition filters, which allows attackers to bypass intended access restrictions via unknown vectors.","status":"published","published":"2009-07-14T14:00:00Z","modified":"2024-09-16T18:29:10Z","updated_at":"2026-11-03T00:55:32.095421Z"}],"ghsa":[{"id":"GHSA-w4g4-v88p-5wq3","title":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access...","description":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Advanced Edition filters, which allows attackers to bypass intended access restrictions via unknown vectors.","status":"published","published":"2022-05-02T03:35:24Z","modified":"2023-01-31T05:07:52Z","updated_at":"2026-11-02T14:49:17.497915Z"}],"nvd":[{"id":"CVE-2009-2453","description":"Citrix XenApp (formerly Presentation Server) 4.5 Hotfix Rollup Pack 3 does not apply an access policy when it is defined with the Access Gateway Advanced Edition filters, which allows attackers to bypass intended access restrictions via unknown vectors.","status":"published","published":"2009-07-14T14:30:00.547Z","modified":"2026-06-16T23:09:28.903Z","cvss":[{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-264"],"updated_at":"2026-11-02T14:01:36.200173Z"}]}}