{"id":"CVE-2017-6720","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-6720","generatedAt":"2026-10-28T21:58:04.326Z","title":"A vulnerability in the Secure Shell (SSH) subsystem of Cisco Small Business Managed Switches software could allow an authenticated, remote attacker to cause a reload of the affected switch, resulting in a denial of service (DoS) condition.","description":"A vulnerability in the Secure Shell (SSH) subsystem of Cisco Small Business Managed Switches software could allow an authenticated, remote attacker to cause a reload of the affected switch, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of SSH connections. An attacker could exploit this vulnerability by logging in to an affected switch via SSH and sending a malicious SSH message. This vulnerability affects the following Cisco products when SSH is enabled: Small Business 300 Series Managed Switches, Small Business 500 Series Stackable Managed Switches, 350 Series Managed Switches, 350X Series Stackable Managed Switches, 550X Series Stackable Managed Switches, ESW2 Series Advanced Switches. Cisco Bug IDs: CSCvb48377.","published":"2017-09-21T05:29:01.000Z","lastModified":"2026-06-17T01:22:52.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-119"],"affected":["cisco/sf302-08pp firmware","cisco/sf302-08mpp firmware","cisco/sg300-10pp firmware","cisco/sg300-10mpp firmware","cisco/sf300-24pp firmware","cisco/sf300-48pp firmware","cisco/sg300-28pp firmware","cisco/sf300-08 firmware","cisco/sf300-48p firmware","cisco/sg300-10mp firmware","cisco/sg300-10p firmware","cisco/sg300-10 firmware","cisco/sg300-28p firmware","cisco/sf300-24p firmware","cisco/sf302-08mp firmware","cisco/sg300-28 firmware","cisco/sf300-48 firmware","cisco/sg300-20 firmware","cisco/sf302-08p firmware","cisco/sg300-52 firmware","cisco/sf300-24 firmware","cisco/sf302-08 firmware","cisco/sf300-24mp firmware","cisco/sg300-10sfp firmware","cisco/sg300-28mp firmware","cisco/sg300-52p firmware","cisco/sg300-52mp firmware","cisco/sg500-28mpp firmware","cisco/sg500-52mp firmware","cisco/sg500xg-8f8t firmware","cisco/sf500-24 firmware","cisco/sf500-24p firmware","cisco/sf500-48 firmware","cisco/sf500-48p firmware","cisco/sg500-28 firmware","cisco/sg500-28p firmware","cisco/sg500-52 firmware","cisco/sg500-52p firmware","cisco/sg500x-24 firmware","cisco/sg500x-24p firmware","cisco/sg500x-48 firmware","cisco/sg500x-48p firmware","cisco/esw2-350g-52 firmware","cisco/esw2-350g-52dc firmware","cisco/esw2-550x-48 firmware","cisco/esw2-550x-48dc firmware","cisco/sg350-10 firmware","cisco/sg350-10p firmware","cisco/sg350-10mp firmware","cisco/sg355-10p firmware","cisco/sg350-28 firmware","cisco/sg350-28p firmware","cisco/sg350-28mp firmware","cisco/sf350-48 firmware","cisco/sf350-48p firmware","cisco/sf350-48mp firmware","cisco/sg350xg-2f10 firmware","cisco/sg350xg-24f firmware","cisco/sg350xg-24t firmware","cisco/sg350xg-48t firmware"],"epss":{"score":0.01395,"percentile":0.72253,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.40%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/100933","tags":["Third Party Advisory","VDB Entry"],"source":"psirt@cisco.com"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-sbms","tags":["Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"http://www.securityfocus.com/bid/100933","tags":["Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170920-sbms","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-6720","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}