{"id":"CVE-2007-3537","aliases":["EUVD-2007-3521","GHSA-qv35-fg75-f39j"],"status":"published","title":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN...","description":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:C/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.015,"percentile":0.74447,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2007-07-03T20:00:00Z","modified":"2026-06-16T22:42:14Z","products":[{"vendor":"ibm","product":"os_400"}],"references":[{"url":"http://secunia.com/advisories/25885","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory"]},{"url":"http://osvdb.org/37792","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]},{"url":"http://www-1.ibm.com/support/docview.wss?uid=nas2742405285431729b86256e620067dc17","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/35173","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"http://www.securityfocus.com/bid/24706","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2007-3537"},{"url":"https://github.com/advisories/GHSA-qv35-fg75-f39j"}],"sources":{"cve":[{"id":"CVE-2007-3537","description":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.","status":"published","published":"2007-07-03T20:00:00Z","modified":"2024-08-07T14:21:36.204Z","updated_at":"2026-11-02T13:32:45.563938Z"}],"euvd":[{"id":"EUVD-2007-3521","description":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.","status":"published","published":"2007-07-03T20:00:00Z","modified":"2024-08-07T14:21:36Z","updated_at":"2026-11-03T01:38:15.873386Z"}],"ghsa":[{"id":"GHSA-qv35-fg75-f39j","title":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN...","description":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.","status":"published","published":"2022-05-01T18:14:48Z","modified":"2023-01-31T05:04:05Z","updated_at":"2026-11-02T14:48:36.280007Z"}],"nvd":[{"id":"CVE-2007-3537","description":"IBM OS/400 (aka i5/OS) V4R2M0 through V5R3M0 on iSeries machines sends responses to TCP SYN-FIN packets, which allows remote attackers to obtain system information and possibly bypass firewall rules.","status":"published","published":"2007-07-03T20:30:00Z","modified":"2026-06-16T22:42:14.64Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:C/I:N/A:N","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:01:17.002124Z"}]}}