{"id":"CVE-2012-4651","aliases":["EUVD-2012-4576","GHSA-49rh-g874-x54c"],"status":"published","title":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of...","description":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01084,"percentile":0.6544,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-189"],"published":"2014-04-23T10:00:00Z","modified":"2026-06-16T23:45:31Z","products":[{"vendor":"cisco","product":"ios"}],"references":[{"url":"http://www.cisco.com/c/en/us/td/docs/ios/15_3m_and_t/release/notes/15_3m_and_t.pdf","tags":["x_refsource_CONFIRM","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2012-4651"},{"url":"https://github.com/advisories/GHSA-49rh-g874-x54c"}],"sources":{"cve":[{"id":"CVE-2012-4651","description":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.","status":"published","published":"2014-04-23T10:00:00Z","modified":"2024-08-06T20:42:54.967Z","updated_at":"2026-11-02T14:34:51.937988Z"}],"euvd":[{"id":"EUVD-2012-4576","description":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.","status":"published","published":"2014-04-23T10:00:00Z","modified":"2024-08-06T20:42:54Z","updated_at":"2026-11-03T01:56:07.373412Z"}],"ghsa":[{"id":"GHSA-49rh-g874-x54c","title":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of...","description":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.","status":"published","published":"2022-05-17T04:46:04Z","modified":"2023-01-28T05:02:28Z","updated_at":"2026-11-02T14:43:47.163465Z"}],"nvd":[{"id":"CVE-2012-4651","description":"Cisco IOS before 15.3(2)T, when scansafe is enabled, allows remote attackers to cause a denial of service (latency) via SYN packets that are not accompanied by SYN-ACK packets from the Scan Safe Tower, aka Bug ID CSCub85451.","status":"published","published":"2014-04-23T11:52:59.133Z","modified":"2026-06-16T23:45:31.497Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:02:17.748457Z"}]}}