{"id":"CVE-2019-1892","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-1892","generatedAt":"2026-10-27T21:17:58.315Z","title":"A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a memory corruption on an affected device.","description":"A vulnerability in the Secure Sockets Layer (SSL) input packet processor of Cisco Small Business 200, 300, and 500 Series Managed Switches could allow an unauthenticated, remote attacker to cause a memory corruption on an affected device. The vulnerability is due to improper validation of HTTPS packets. An attacker could exploit this vulnerability by sending a malformed HTTPS packet to the management web interface of the affected device. A successful exploit could allow the attacker to cause an unexpected reload of the device, resulting in a denial of service (DoS) condition.","published":"2019-07-06T02:15:11.000Z","lastModified":"2026-06-17T02:29:33.000Z","status":"Modified","sourceIdentifier":"psirt@cisco.com","cvss":{"version":"3.0","score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-119"],"affected":["cisco/sf200-24 firmware","cisco/sf200-24p firmware","cisco/sf200-48 firmware","cisco/sf200-48p firmware","cisco/sg200-18 firmware","cisco/sg200-26 firmware","cisco/sg200-26p firmware","cisco/sg200-50 firmware","cisco/sg200-50p firmware","cisco/sg300-10 firmware","cisco/sg300-10mp firmware","cisco/sg300-10mpp firmware","cisco/sg300-10sfp firmware","cisco/sg300-10p firmware","cisco/sg300-10pp firmware","cisco/sg300-20 firmware","cisco/sg300-28 firmware","cisco/sg300-28p firmware","cisco/sg300-28pp firmware","cisco/sg300-28mp firmware","cisco/sg300-28sfp firmware","cisco/sg300-52 firmware","cisco/sg300-52p firmware","cisco/sg300-52mp firmware","cisco/sf300-08 firmware","cisco/sf302-08 firmware","cisco/sf302-08mp firmware","cisco/sf302-08p firmware","cisco/sf302-08pp firmware","cisco/sf302-08mpp firmware","cisco/sf300-24 firmware","cisco/sf300-24p firmware","cisco/sf300-24mp firmware","cisco/sf300-24pp firmware","cisco/sf300-48 firmware","cisco/sf300-48p firmware","cisco/sf300-48pp firmware","cisco/sf500-24 firmware","cisco/sf500-24p firmware","cisco/sf500-24mp firmware","cisco/sf500-48 firmware","cisco/sf500-48p firmware","cisco/sf500-48mp firmware","cisco/sg500-28 firmware","cisco/sg500-28p firmware","cisco/sg500-28mpp firmware","cisco/sg500-52 firmware","cisco/sg500-52p firmware","cisco/sg500-52mp firmware","cisco/sg500x-24 firmware","cisco/sg500x24mpp firmware","cisco/sg500x-48 firmware","cisco/sg500x-48p firmware","cisco/sg500x-48mp firmware","cisco/sg500xg8f8t firmware","cisco/esw2-350g52dc firmware","cisco/esw2-550x48dc firmware"],"epss":{"score":0.01772,"percentile":0.78001,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.77%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-sbss-memcorrupt","tags":["Vendor Advisory"],"source":"psirt@cisco.com"},{"url":"https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190703-sbss-memcorrupt","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-1892","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."}