{"schemaVersion":3,"id":"CVE-2015-4236","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Cisco AsyncOS on Email Security Appliance (ESA) devices with software 8.5.6-073, 8.5.6-074, and 9.0.0-461, when clustering is enabled, allows remote attackers to cause a denial of service (clustering and SSH outage) via a packet flood, aka Bug IDs CSCur13704 and CSCuq05636.","dates":{"published":"2015-07-10T19:00:00.000Z","modified":"2024-08-06T06:11:11.787Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.02394,"percentile":0.83744,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.02394},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02394,"percentile":0.83744}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.02394,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.02394,"percentile":0.83744}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-399","name":"Resource Management Errors","description":"Weaknesses in this category are related to improper management of system resources.","type":"category","status":"Draft","abstraction":null,"likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/399.html"}],"affected":[{"vendor":"cisco","product":"email_security_appliance_firmware","name":"email security appliance firmware","label":"email_security_appliance_firmware","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"8.5.6-074","noFixRecorded":false,"fixedIn":null},{"text":"8.5.6-073","noFixRecorded":false,"fixedIn":null},{"text":"9.0.0-461","noFixRecorded":false,"fixedIn":null}],"versionsText":"8.5.6-074 | 8.5.6-073 | 9.0.0-461","eol":null,"hubHref":"/vendor/cisco/email_security_appliance"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://www.securitytracker.com/id/1032855","label":"www.securitytracker.com/id/1032855","hostname":"www.securitytracker.com","tags":["VDB Entry","X Refsource SECTRACK","Third Party Advisory"]},{"url":"http://www.securityfocus.com/bid/75703","label":"www.securityfocus.com/bid/75703","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Third Party Advisory"]},{"url":"http://tools.cisco.com/security/center/viewAlert.x?alertId=39785","label":"tools.cisco.com/security/center/viewAlert.x?alertId=39785","hostname":"tools.cisco.com","tags":["Vendor Advisory","X Refsource CISCO"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2015-07-10T19:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-06T06:11:11.787Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":18,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T02:18:22.163Z","stale":false,"partial":false}}